안녕하세요! 영한님!강의는 너무나 잘들었습니다!👍👍강의를 듣고 나서 본격적으로 JPA를 이용한 개발을 진행하려 하는데, 실무에서 적용 시 궁금한 점이 있어서 질문을 남기게 되었습니다.강의 내용에서 Page 를 활용해서 DB 데이터의 페이징 처리를 할 수 있다는 점에 대해 알려주셔서 굉장히 유용한 방식이라 생각이 듭니다.이를 실무에서 실제로 적용하기 앞서 고민이 되는 부분은, 페이징이나 정렬과 관련하여 쿼리문을 이용해 처리를 하는 것과 전제 데이터를 가져와 비즈니스 로직에서 처리 하는 방식 중 어떤 것이 효율 적인지 고민이 되고 검색도 해봤는데 의견이 다 나뉘더라구요. 그래서 영한님께서는 보통 어떤 것을 기준으로 두 가지 방식 중에 선택을 하여 적용을 하시는지 의견을 듣고 싶어서 질문 드리게 되었습니다. 감사합니다!!

몇시간쨰 해매고 있네요 재설치 하고 계속 spring boot 실행해도 이게 뜨는데 왜그런지 알수 있을까요

org.springframework.boot.autoconfigure.AutoConfiguration.importsspy.properties  글에 적힌대로 했는데 안됩니다.

[질문 템플릿]1. 강의 내용과 관련된 질문인가요? (예/아니오)2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? (예/아니오)3. 질문 잘하기 메뉴얼을 읽어보셨나요? (예/아니오) [엔티티클래스 개발2]에서2023-02-17T11:56:58.827+09:00 WARN 9590 --- [ restartedMain] org.hibernate.orm.deprecation : HHH90000021: Encountered deprecated setting [javax.persistence.sharedCache.mode], use [jakarta.persistence.sharedCache.mode] instead이러한 워닝과2023-02-17T11:56:59.018+09:00 ERROR 9590 --- [ restartedMain] j.LocalContainerEntityManagerFactoryBean : Failed to initialize JPA EntityManagerFactory: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.MappingException: Could not instantiate id generator [entity-name=jpabook.jpashop.domain.OrderItem] 2023-02-17T11:56:59.045+09:00 ERROR 9590 --- [ restartedMain] o.s.boot.SpringApplication : Application run failed에러가 발생했습니다.OrderItem 부분에서 오류가 나는 것 같아서, OrderItem, Order 부분 모두 영한님 코드로 수정하였는데도 오류가 수정되지 않습니다..OrderItempackage jpabook.jpashop.domain; import jakarta.persistence.Column; import jakarta.persistence.Entity; import jakarta.persistence.FetchType; import jakarta.persistence.GeneratedValue; import jakarta.persistence.Id; import jakarta.persistence.JoinColumn; import jakarta.persistence.ManyToOne; import jakarta.persistence.Table; import jpabook.jpashop.domain.Item.Item; import lombok.Getter; import lombok.Setter; @Entity @Table(name = "order_item") @Getter @Setter public class OrderItem { @Id @GeneratedValue @Column(name = "order_item_id") private Long id; @ManyToOne(fetch = FetchType.LAZY) @JoinColumn(name = "item_id") private Item item; //주문 상품 @ManyToOne(fetch = FetchType.LAZY) @JoinColumn(name = "order_id") private Order order; //주문 private int orderPrice; //주문 가격 private int count; //주문 수량 }Orderpackage jpabook.jpashop.domain; import jakarta.persistence.CascadeType; import jakarta.persistence.Column; import jakarta.persistence.Entity; import jakarta.persistence.FetchType; import jakarta.persistence.GeneratedValue; import jakarta.persistence.Id; import jakarta.persistence.JoinColumn; import jakarta.persistence.ManyToOne; import jakarta.persistence.OneToMany; import jakarta.persistence.OneToOne; import jakarta.persistence.Table; import java.time.LocalDateTime; import java.util.ArrayList; import java.util.List; import lombok.Getter; import lombok.Setter; @Entity @Table(name = "orders") @Getter @Setter public class Order { @Id @GeneratedValue @Column(name = "order_id") private Long id; @ManyToOne(fetch = FetchType.LAZY) @JoinColumn(name = "member_id") private Member member; //주문 회원 @OneToMany(mappedBy = "order", cascade = CascadeType.ALL) private List<OrderItem> orderItems = new ArrayList<>(); @OneToOne(cascade = CascadeType.ALL, fetch = FetchType.LAZY) @JoinColumn(name = "delivery_id") private Delivery delivery; //배송정보 private LocalDateTime orderDate; //주문시간 @Enumerated(EnumType.STRING) private OrderStatus status; //주문상태 [ORDER, CANCEL] } Could not instantiate id generator이 부분을 검색해보니, @SequenceGenerator ( allocationSize=1) 으로 수정하면 된다는데, 구글링 해본 결과 SequenceGenerator를 모두 사용한 경우에 저렇게 오류가 나는데, 저는 SequenceGenerator를 사용하지 않았음에도 오류가 계속됩니다.@Column(name = "order_item_id") 이 부분을 주석처리해보아도 해결되지 않습니다 h2서버를 이름을 변경(url: jdbc:h2:tcp://localhost/~/jpashop2)하니우선 오류 해결되었습니다..!! -> 이후에도 똑같은 오류가 반복됩니다 ㅜㅜ 해결책을알려주시면 감사하겠습니다. 테스트 코드를 작성시에도 오류가 발생합니다.테스트 코드입니다. package jpabook.jpashop.service; import static org.hamcrest.CoreMatchers.equalTo; import static org.hamcrest.MatcherAssert.assertThat; import static org.hamcrest.CoreMatchers.is; import jpabook.jpashop.domain.Member; import jpabook.jpashop.repository.MemberRepository; import org.junit.jupiter.api.Test; import org.junit.jupiter.api.extension.ExtendWith; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.test.context.SpringBootTest; import org.springframework.test.context.junit.jupiter.SpringExtension; import org.springframework.transaction.annotation.Transactional; @ExtendWith(SpringExtension.class) @SpringBootTest @Transactional public class MemberServiceTest { @Autowired MemberService memberService; @Autowired MemberRepository memberRepository; @Test // @DisplayName("") public void 회원가입() throws Exception{ // given Member member = new Member(); member.setName("kim"); // when Long saveId = memberService.join(member); Member findMember= memberRepository.findOne(saveId); // then assertThat(findMember.getId(),is(equalTo(member.getId()))); } }org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.MappingException: Could not instantiate id generator [entity-name=jpabook.jpashop.domain.OrderItem] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1751) ~[spring-beans-6.0.4.jar:6.0.4] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:599) ~[spring-beans-6.0.4.jar:6.0.4] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:521) ~[spring-beans-6.0.4.jar:6.0.4] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:326) ~[spring-beans-6.0.4.jar:6.0.4] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-6.0.4.jar:6.0.4] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:324) ~[spring-beans-6.0.4.jar:6.0.4] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) ~[spring-beans-6.0.4.jar:6.0.4] at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1130) ~[spring-context-6.0.4.jar:6.0.4] at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:905) ~[spring-context-6.0.4.jar:6.0.4] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:584) ~[spring-context-6.0.4.jar:6.0.4] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:730) ~[spring-boot-3.0.2.jar:3.0.2] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:432) ~[spring-boot-3.0.2.jar:3.0.2] at org.springframework.boot.SpringApplication.run(SpringApplication.java:308) ~[spring-boot-3.0.2.jar:3.0.2] at org.springframework.boot.test.context.SpringBootContextLoader.lambda$loadContext$3(SpringBootContextLoader.java:137) ~[spring-boot-test-3.0.2.jar:3.0.2] at org.springframework.util.function.ThrowingSupplier.get(ThrowingSupplier.java:59) ~[spring-core-6.0.4.jar:6.0.4] at org.springframework.util.function.ThrowingSupplier.get(ThrowingSupplier.java:47) ~[spring-core-6.0.4.jar:6.0.4] at org.springframework.boot.SpringApplication.withHook(SpringApplication.java:1386) ~[spring-boot-3.0.2.jar:3.0.2] at org.springframework.boot.test.context.SpringBootContextLoader$ContextLoaderHook.run(SpringBootContextLoader.java:543) ~[spring-boot-test-3.0.2.jar:3.0.2] at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:137) ~[spring-boot-test-3.0.2.jar:3.0.2] at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:108) ~[spring-boot-test-3.0.2.jar:3.0.2] at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:184) ~[spring-test-6.0.4.jar:6.0.4] at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:118) ~[spring-test-6.0.4.jar:6.0.4] at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:127) ~[spring-test-6.0.4.jar:6.0.4] at org.springframework.test.context.web.ServletTestExecutionListener.setUpRequestContextIfNecessary(ServletTestExecutionListener.java:191) ~[spring-test-6.0.4.jar:6.0.4] at org.springframework.test.context.web.ServletTestExecutionListener.prepareTestInstance(ServletTestExecutionListener.java:130) ~[spring-test-6.0.4.jar:6.0.4] at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:241) ~[spring-test-6.0.4.jar:6.0.4] at org.springframework.test.context.junit.jupiter.SpringExtension.postProcessTestInstance(SpringExtension.java:138) ~[spring-test-6.0.4.jar:6.0.4] at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$invokeTestInstancePostProcessors$10(ClassBasedTestDescriptor.java:377) ~[junit-jupiter-engine-5.9.2.jar:5.9.2] at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.executeAndMaskThrowable(ClassBasedTestDescriptor.java:382) ~[junit-jupiter-engine-5.9.2.jar:5.9.2] at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$invokeTestInstancePostProcessors$11(ClassBasedTestDescriptor.java:377) ~[junit-jupiter-engine-5.9.2.jar:5.9.2] at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197) ~[na:na] at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) ~[na:na] at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1625) ~[na:na] at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) ~[na:na] at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) ~[na:na] at java.base/java.util.stream.StreamSpliterators$WrappingSpliterator.forEachRemaining(StreamSpliterators.java:310) ~[na:na] at java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:735) ~[na:na] at java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:734) ~[na:na] at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:762) ~[na:na] at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.invokeTestInstancePostProcessors(ClassBasedTestDescriptor.java:376) ~[junit-jupiter-engine-5.9.2.jar:5.9.2] at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$instantiateAndPostProcessTestInstance$6(ClassBasedTestDescriptor.java:289) ~[junit-jupiter-engine-5.9.2.jar:5.9.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.instantiateAndPostProcessTestInstance(ClassBasedTestDescriptor.java:288) ~[junit-jupiter-engine-5.9.2.jar:5.9.2] at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$4(ClassBasedTestDescriptor.java:278) ~[junit-jupiter-engine-5.9.2.jar:5.9.2] at java.base/java.util.Optional.orElseGet(Optional.java:364) ~[na:na] at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$5(ClassBasedTestDescriptor.java:277) ~[junit-jupiter-engine-5.9.2.jar:5.9.2] at org.junit.jupiter.engine.execution.TestInstancesProvider.getTestInstances(TestInstancesProvider.java:31) ~[junit-jupiter-engine-5.9.2.jar:5.9.2] at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$prepare$0(TestMethodTestDescriptor.java:105) ~[junit-jupiter-engine-5.9.2.jar:5.9.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:104) ~[junit-jupiter-engine-5.9.2.jar:5.9.2] at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:68) ~[junit-jupiter-engine-5.9.2.jar:5.9.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$prepare$2(NodeTestTask.java:123) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.prepare(NodeTestTask.java:123) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:90) ~[junit-platform-engine-1.9.2.jar:1.9.2] at java.base/java.util.ArrayList.forEach(ArrayList.java:1511) ~[na:na] at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) ~[junit-platform-engine-1.9.2.jar:1.9.2] at java.base/java.util.ArrayList.forEach(ArrayList.java:1511) ~[na:na] at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:107) ~[na:na] at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88) ~[na:na] at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54) ~[na:na] at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67) ~[na:na] at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52) ~[na:na] at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:114) ~[na:na] at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:86) ~[na:na] at org.junit.platform.launcher.core.DefaultLauncherSession$DelegatingLauncher.execute(DefaultLauncherSession.java:86) ~[na:na] at org.junit.platform.launcher.core.SessionPerRequestLauncher.execute(SessionPerRequestLauncher.java:53) ~[na:na] at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.processAllTestClasses(JUnitPlatformTestClassProcessor.java:99) ~[na:na] at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.access$000(JUnitPlatformTestClassProcessor.java:79) ~[na:na] at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor.stop(JUnitPlatformTestClassProcessor.java:75) ~[na:na] at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.stop(SuiteTestClassProcessor.java:62) ~[na:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[na:na] at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na] at java.base/java.lang.reflect.Method.invoke(Method.java:568) ~[na:na] at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36) ~[na:na] at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24) ~[na:na] at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:33) ~[na:na] at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:94) ~[na:na] at jdk.proxy1/jdk.proxy1.$Proxy2.stop(Unknown Source) ~[na:na] at org.gradle.api.internal.tasks.testing.worker.TestWorker$3.run(TestWorker.java:193) ~[na:na] at org.gradle.api.internal.tasks.testing.worker.TestWorker.executeAndMaintainThreadName(TestWorker.java:129) ~[na:na] at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:100) ~[na:na] at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:60) ~[na:na] at org.gradle.process.internal.worker.child.ActionExecutionWorker.execute(ActionExecutionWorker.java:56) ~[na:na] at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:113) ~[na:na] at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:65) ~[na:na] at worker.org.gradle.process.internal.worker.GradleWorkerMain.run(GradleWorkerMain.java:69) ~[gradle-worker.jar:na] at worker.org.gradle.process.internal.worker.GradleWorkerMain.main(GradleWorkerMain.java:74) ~[gradle-worker.jar:na] Caused by: jakarta.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.MappingException: Could not instantiate id generator [entity-name=jpabook.jpashop.domain.OrderItem] at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:421) ~[spring-orm-6.0.4.jar:6.0.4] at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396) ~[spring-orm-6.0.4.jar:6.0.4] at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:352) ~[spring-orm-6.0.4.jar:6.0.4] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1797) ~[spring-beans-6.0.4.jar:6.0.4] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1747) ~[spring-beans-6.0.4.jar:6.0.4] ... 108 common frames omitted Caused by: org.hibernate.MappingException: Could not instantiate id generator [entity-name=jpabook.jpashop.domain.OrderItem] at org.hibernate.id.factory.internal.StandardIdentifierGeneratorFactory.createIdentifierGenerator(StandardIdentifierGeneratorFactory.java:222) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final] at org.hibernate.mapping.SimpleValue.createIdentifierGenerator(SimpleValue.java:515) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final] at org.hibernate.mapping.SimpleValue.createIdentifierGenerator(SimpleValue.java:372) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final] at org.hibernate.internal.SessionFactoryImpl.lambda$new$1(SessionFactoryImpl.java:293) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final] at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) ~[na:na] at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) ~[na:na] at java.base/java.util.HashMap$ValueSpliterator.forEachRemaining(HashMap.java:1779) ~[na:na] at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) ~[na:na] at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) ~[na:na] at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) ~[na:na] at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) ~[na:na] at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[na:na] at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) ~[na:na] at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:292) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final] at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:415) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final] at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1425) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final] at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:66) ~[spring-orm-6.0.4.jar:6.0.4] at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:376) ~[spring-orm-6.0.4.jar:6.0.4] at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409) ~[spring-orm-6.0.4.jar:6.0.4] ... 112 common frames omitted Caused by: org.hibernate.HibernateException: Could not fetch the SequenceInformation from the database at org.hibernate.engine.jdbc.env.internal.ExtractedDatabaseMetaDataImpl.sequenceInformationList(ExtractedDatabaseMetaDataImpl.java:302) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final] at org.hibernate.engine.jdbc.env.internal.ExtractedDatabaseMetaDataImpl.getSequenceInformationList(ExtractedDatabaseMetaDataImpl.java:151) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final] at org.hibernate.id.enhanced.SequenceStyleGenerator.getSequenceIncrementValue(SequenceStyleGenerator.java:561) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final] at org.hibernate.id.enhanced.SequenceStyleGenerator.configure(SequenceStyleGenerator.java:210) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final] at org.hibernate.id.factory.internal.StandardIdentifierGeneratorFactory.createIdentifierGenerator(StandardIdentifierGeneratorFactory.java:217) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final] ... 130 common frames omitted Caused by: org.h2.jdbc.JdbcSQLSyntaxErrorException: Column "start_value" not found [42122-214] at org.h2.message.DbException.getJdbcSQLException(DbException.java:502) ~[h2-2.1.214.jar:2.1.214] at org.h2.message.DbException.getJdbcSQLException(DbException.java:477) ~[h2-2.1.214.jar:2.1.214] at org.h2.message.DbException.get(DbException.java:223) ~[h2-2.1.214.jar:2.1.214] at org.h2.message.DbException.get(DbException.java:199) ~[h2-2.1.214.jar:2.1.214] at org.h2.jdbc.JdbcResultSet.getColumnIndex(JdbcResultSet.java:3492) ~[h2-2.1.214.jar:2.1.214] at org.h2.jdbc.JdbcResultSet.getLong(JdbcResultSet.java:745) ~[h2-2.1.214.jar:2.1.214] at com.zaxxer.hikari.pool.HikariProxyResultSet.getLong(HikariProxyResultSet.java) ~[HikariCP-5.0.1.jar:na] at org.hibernate.tool.schema.extract.internal.SequenceInformationExtractorLegacyImpl.resultSetStartValueSize(SequenceInformationExtractorLegacyImpl.java:110) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final] at org.hibernate.tool.schema.extract.internal.SequenceInformationExtractorLegacyImpl.lambda$extractMetadata$0(SequenceInformationExtractorLegacyImpl.java:54) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final] at org.hibernate.tool.schema.extract.spi.ExtractionContext.getQueryResults(ExtractionContext.java:50) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final] at org.hibernate.tool.schema.extract.internal.SequenceInformationExtractorLegacyImpl.extractMetadata(SequenceInformationExtractorLegacyImpl.java:39) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final] at org.hibernate.engine.jdbc.env.internal.ExtractedDatabaseMetaDataImpl.sequenceInformationList(ExtractedDatabaseMetaDataImpl.java:286) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final] ... 134 common frames omitted ============================ CONDITIONS EVALUATION REPORT ============================ Positive matches: ----------------- None Negative matches: ----------------- None Exclusions: ----------- None Unconditional classes: ---------------------- None 2023-02-17T13:58:37.666+09:00 ERROR 10778 --- [ Test worker] o.s.test.context.TestContextManager : Caught exception while allowing TestExecutionListener [org.springframework.test.context.web.ServletTestExecutionListener] to prepare test instance [jpabook.jpashop.service.MemberServiceTest@4387d2f4] java.lang.IllegalStateException: Failed to load ApplicationContext for [WebMergedContextConfiguration@7c8f047a testClass = jpabook.jpashop.service.MemberServiceTest, locations = [], classes = [jpabook.jpashop.JpashopApplication], contextInitializerClasses = [], activeProfiles = [], propertySourceLocations = [], propertySourceProperties = ["org.springframework.boot.test.context.SpringBootTestContextBootstrapper=true"], contextCustomizers = [org.springframework.boot.test.autoconfigure.actuate.observability.ObservabilityContextCustomizerFactory$DisableObservabilityContextCustomizer@9da1, org.springframework.boot.test.autoconfigure.properties.PropertyMappingContextCustomizer@0, org.springframework.boot.test.autoconfigure.web.servlet.WebDriverContextCustomizerFactory$Customizer@648c94da, org.springframework.boot.test.context.filter.ExcludeFilterContextCustomizer@6c0d9d86, org.springframework.boot.test.json.DuplicateJsonObjectContextCustomizerFactory$DuplicateJsonObjectContextCustomizer@5dcb4f5f, org.springframework.boot.test.mock.mockito.MockitoContextCustomizer@0, org.springframework.boot.test.web.client.TestRestTemplateContextCustomizer@51acdf2e, org.springframework.boot.test.context.SpringBootTestAnnotation@183891cd], resourceBasePath = "src/main/webapp", contextLoader = org.springframework.boot.test.context.SpringBootContextLoader, parent = null] at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:142) ~[spring-test-6.0.4.jar:6.0.4] at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:127) ~[spring-test-6.0.4.jar:6.0.4] at org.springframework.test.context.web.ServletTestExecutionListener.setUpRequestContextIfNecessary(ServletTestExecutionListener.java:191) ~[spring-test-6.0.4.jar:6.0.4] at org.springframework.test.context.web.ServletTestExecutionListener.prepareTestInstance(ServletTestExecutionListener.java:130) ~[spring-test-6.0.4.jar:6.0.4] at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:241) ~[spring-test-6.0.4.jar:6.0.4] at org.springframework.test.context.junit.jupiter.SpringExtension.postProcessTestInstance(SpringExtension.java:138) ~[spring-test-6.0.4.jar:6.0.4] at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$invokeTestInstancePostProcessors$10(ClassBasedTestDescriptor.java:377) ~[junit-jupiter-engine-5.9.2.jar:5.9.2] at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.executeAndMaskThrowable(ClassBasedTestDescriptor.java:382) ~[junit-jupiter-engine-5.9.2.jar:5.9.2] at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$invokeTestInstancePostProcessors$11(ClassBasedTestDescriptor.java:377) ~[junit-jupiter-engine-5.9.2.jar:5.9.2] at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197) ~[na:na] at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) ~[na:na] at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1625) ~[na:na] at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) ~[na:na] at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) ~[na:na] at java.base/java.util.stream.StreamSpliterators$WrappingSpliterator.forEachRemaining(StreamSpliterators.java:310) ~[na:na] at java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:735) ~[na:na] at java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:734) ~[na:na] at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:762) ~[na:na] at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.invokeTestInstancePostProcessors(ClassBasedTestDescriptor.java:376) ~[junit-jupiter-engine-5.9.2.jar:5.9.2] at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$instantiateAndPostProcessTestInstance$6(ClassBasedTestDescriptor.java:289) ~[junit-jupiter-engine-5.9.2.jar:5.9.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.instantiateAndPostProcessTestInstance(ClassBasedTestDescriptor.java:288) ~[junit-jupiter-engine-5.9.2.jar:5.9.2] at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$4(ClassBasedTestDescriptor.java:278) ~[junit-jupiter-engine-5.9.2.jar:5.9.2] at java.base/java.util.Optional.orElseGet(Optional.java:364) ~[na:na] at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$5(ClassBasedTestDescriptor.java:277) ~[junit-jupiter-engine-5.9.2.jar:5.9.2] at org.junit.jupiter.engine.execution.TestInstancesProvider.getTestInstances(TestInstancesProvider.java:31) ~[junit-jupiter-engine-5.9.2.jar:5.9.2] at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$prepare$0(TestMethodTestDescriptor.java:105) ~[junit-jupiter-engine-5.9.2.jar:5.9.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:104) ~[junit-jupiter-engine-5.9.2.jar:5.9.2] at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:68) ~[junit-jupiter-engine-5.9.2.jar:5.9.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$prepare$2(NodeTestTask.java:123) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.prepare(NodeTestTask.java:123) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:90) ~[junit-platform-engine-1.9.2.jar:1.9.2] at java.base/java.util.ArrayList.forEach(ArrayList.java:1511) ~[na:na] at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) ~[junit-platform-engine-1.9.2.jar:1.9.2] at java.base/java.util.ArrayList.forEach(ArrayList.java:1511) ~[na:na] at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54) ~[junit-platform-engine-1.9.2.jar:1.9.2] at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:107) ~[na:na] at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88) ~[na:na] at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54) ~[na:na] at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67) ~[na:na] at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52) ~[na:na] at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:114) ~[na:na] at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:86) ~[na:na] at org.junit.platform.launcher.core.DefaultLauncherSession$DelegatingLauncher.execute(DefaultLauncherSession.java:86) ~[na:na] at org.junit.platform.launcher.core.SessionPerRequestLauncher.execute(SessionPerRequestLauncher.java:53) ~[na:na] at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.processAllTestClasses(JUnitPlatformTestClassProcessor.java:99) ~[na:na] at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.access$000(JUnitPlatformTestClassProcessor.java:79) ~[na:na] at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor.stop(JUnitPlatformTestClassProcessor.java:75) ~[na:na] at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.stop(SuiteTestClassProcessor.java:62) ~[na:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[na:na] at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na] at java.base/java.lang.reflect.Method.invoke(Method.java:568) ~[na:na] at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36) ~[na:na] at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24) ~[na:na] at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:33) ~[na:na] at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:94) ~[na:na] at jdk.proxy1/jdk.proxy1.$Proxy2.stop(Unknown Source) ~[na:na] at org.gradle.api.internal.tasks.testing.worker.TestWorker$3.run(TestWorker.java:193) ~[na:na] at org.gradle.api.internal.tasks.testing.worker.TestWorker.executeAndMaintainThreadName(TestWorker.java:129) ~[na:na] at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:100) ~[na:na] at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:60) ~[na:na] at org.gradle.process.internal.worker.child.ActionExecutionWorker.execute(ActionExecutionWorker.java:56) ~[na:na] at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:113) ~[na:na] at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:65) ~[na:na] at worker.org.gradle.process.internal.worker.GradleWorkerMain.run(GradleWorkerMain.java:69) ~[gradle-worker.jar:na] at worker.org.gradle.process.internal.worker.GradleWorkerMain.main(GradleWorkerMain.java:74) ~[gradle-worker.jar:na] Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.MappingException: Could not instantiate id generator [entity-name=jpabook.jpashop.domain.OrderItem] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1751) ~[spring-beans-6.0.4.jar:6.0.4] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:599) ~[spring-beans-6.0.4.jar:6.0.4] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:521) ~[spring-beans-6.0.4.jar:6.0.4] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:326) ~[spring-beans-6.0.4.jar:6.0.4] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-6.0.4.jar:6.0.4] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:324) ~[spring-beans-6.0.4.jar:6.0.4] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) ~[spring-beans-6.0.4.jar:6.0.4] at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1130) ~[spring-context-6.0.4.jar:6.0.4] at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:905) ~[spring-context-6.0.4.jar:6.0.4] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:584) ~[spring-context-6.0.4.jar:6.0.4] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:730) ~[spring-boot-3.0.2.jar:3.0.2] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:432) ~[spring-boot-3.0.2.jar:3.0.2] at org.springframework.boot.SpringApplication.run(SpringApplication.java:308) ~[spring-boot-3.0.2.jar:3.0.2] at org.springframework.boot.test.context.SpringBootContextLoader.lambda$loadContext$3(SpringBootContextLoader.java:137) ~[spring-boot-test-3.0.2.jar:3.0.2] at org.springframework.util.function.ThrowingSupplier.get(ThrowingSupplier.java:59) ~[spring-core-6.0.4.jar:6.0.4] at org.springframework.util.function.ThrowingSupplier.get(ThrowingSupplier.java:47) ~[spring-core-6.0.4.jar:6.0.4] at org.springframework.boot.SpringApplication.withHook(SpringApplication.java:1386) ~[spring-boot-3.0.2.jar:3.0.2] at org.springframework.boot.test.context.SpringBootContextLoader$ContextLoaderHook.run(SpringBootContextLoader.java:543) ~[spring-boot-test-3.0.2.jar:3.0.2] at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:137) ~[spring-boot-test-3.0.2.jar:3.0.2] at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:108) ~[spring-boot-test-3.0.2.jar:3.0.2] at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:184) ~[spring-test-6.0.4.jar:6.0.4] at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:118) ~[spring-test-6.0.4.jar:6.0.4] ... 87 common frames omitted Caused by: jakarta.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.MappingException: Could not instantiate id generator [entity-name=jpabook.jpashop.domain.OrderItem] at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:421) ~[spring-orm-6.0.4.jar:6.0.4] at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396) ~[spring-orm-6.0.4.jar:6.0.4] at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:352) ~[spring-orm-6.0.4.jar:6.0.4] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1797) ~[spring-beans-6.0.4.jar:6.0.4] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1747) ~[spring-beans-6.0.4.jar:6.0.4] ... 108 common frames omitted Caused by: org.hibernate.MappingException: Could not instantiate id generator [entity-name=jpabook.jpashop.domain.OrderItem] at org.hibernate.id.factory.internal.StandardIdentifierGeneratorFactory.createIdentifierGenerator(StandardIdentifierGeneratorFactory.java:222) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final] at org.hibernate.mapping.SimpleValue.createIdentifierGenerator(SimpleValue.java:515) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final] at org.hibernate.mapping.SimpleValue.createIdentifierGenerator(SimpleValue.java:372) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final] at org.hibernate.internal.SessionFactoryImpl.lambda$new$1(SessionFactoryImpl.java:293) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final] at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) ~[na:na] at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) ~[na:na] at java.base/java.util.HashMap$ValueSpliterator.forEachRemaining(HashMap.java:1779) ~[na:na] at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) ~[na:na] at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) ~[na:na] at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) ~[na:na] at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) ~[na:na] at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[na:na] at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) ~[na:na] at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:292) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final] at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:415) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final] at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1425) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final] at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:66) ~[spring-orm-6.0.4.jar:6.0.4] at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:376) ~[spring-orm-6.0.4.jar:6.0.4] at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409) ~[spring-orm-6.0.4.jar:6.0.4] ... 112 common frames omitted Caused by: org.hibernate.HibernateException: Could not fetch the SequenceInformation from the database at org.hibernate.engine.jdbc.env.internal.ExtractedDatabaseMetaDataImpl.sequenceInformationList(ExtractedDatabaseMetaDataImpl.java:302) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final] at org.hibernate.engine.jdbc.env.internal.ExtractedDatabaseMetaDataImpl.getSequenceInformationList(ExtractedDatabaseMetaDataImpl.java:151) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final] at org.hibernate.id.enhanced.SequenceStyleGenerator.getSequenceIncrementValue(SequenceStyleGenerator.java:561) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final] at org.hibernate.id.enhanced.SequenceStyleGenerator.configure(SequenceStyleGenerator.java:210) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final] at org.hibernate.id.factory.internal.StandardIdentifierGeneratorFactory.createIdentifierGenerator(StandardIdentifierGeneratorFactory.java:217) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final] ... 130 common frames omitted Caused by: org.h2.jdbc.JdbcSQLSyntaxErrorException: Column "start_value" not found [42122-214] at org.h2.message.DbException.getJdbcSQLException(DbException.java:502) ~[h2-2.1.214.jar:2.1.214] at org.h2.message.DbException.getJdbcSQLException(DbException.java:477) ~[h2-2.1.214.jar:2.1.214] at org.h2.message.DbException.get(DbException.java:223) ~[h2-2.1.214.jar:2.1.214] at org.h2.message.DbException.get(DbException.java:199) ~[h2-2.1.214.jar:2.1.214] at org.h2.jdbc.JdbcResultSet.getColumnIndex(JdbcResultSet.java:3492) ~[h2-2.1.214.jar:2.1.214] at org.h2.jdbc.JdbcResultSet.getLong(JdbcResultSet.java:745) ~[h2-2.1.214.jar:2.1.214] at com.zaxxer.hikari.pool.HikariProxyResultSet.getLong(HikariProxyResultSet.java) ~[HikariCP-5.0.1.jar:na] at org.hibernate.tool.schema.extract.internal.SequenceInformationExtractorLegacyImpl.resultSetStartValueSize(SequenceInformationExtractorLegacyImpl.java:110) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final] at org.hibernate.tool.schema.extract.internal.SequenceInformationExtractorLegacyImpl.lambda$extractMetadata$0(SequenceInformationExtractorLegacyImpl.java:54) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final] at org.hibernate.tool.schema.extract.spi.ExtractionContext.getQueryResults(ExtractionContext.java:50) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final] at org.hibernate.tool.schema.extract.internal.SequenceInformationExtractorLegacyImpl.extractMetadata(SequenceInformationExtractorLegacyImpl.java:39) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final] at org.hibernate.engine.jdbc.env.internal.ExtractedDatabaseMetaDataImpl.sequenceInformationList(ExtractedDatabaseMetaDataImpl.java:286) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final] ... 134 common frames omitted Failed to load ApplicationContext for [WebMergedContextConfiguration@7c8f047a testClass = jpabook.jpashop.service.MemberServiceTest, locations = [], classes = [jpabook.jpashop.JpashopApplication], contextInitializerClasses = [], activeProfiles = [], propertySourceLocations = [], propertySourceProperties = ["org.springframework.boot.test.context.SpringBootTestContextBootstrapper=true"], contextCustomizers = [org.springframework.boot.test.autoconfigure.actuate.observability.ObservabilityContextCustomizerFactory$DisableObservabilityContextCustomizer@9da1, org.springframework.boot.test.autoconfigure.properties.PropertyMappingContextCustomizer@0, org.springframework.boot.test.autoconfigure.web.servlet.WebDriverContextCustomizerFactory$Customizer@648c94da, org.springframework.boot.test.context.filter.ExcludeFilterContextCustomizer@6c0d9d86, org.springframework.boot.test.json.DuplicateJsonObjectContextCustomizerFactory$DuplicateJsonObjectContextCustomizer@5dcb4f5f, org.springframework.boot.test.mock.mockito.MockitoContextCustomizer@0, org.springframework.boot.test.web.client.TestRestTemplateContextCustomizer@51acdf2e, org.springframework.boot.test.context.SpringBootTestAnnotation@183891cd], resourceBasePath = "src/main/webapp", contextLoader = org.springframework.boot.test.context.SpringBootContextLoader, parent = null] java.lang.IllegalStateException: Failed to load ApplicationContext for [WebMergedContextConfiguration@7c8f047a testClass = jpabook.jpashop.service.MemberServiceTest, locations = [], classes = [jpabook.jpashop.JpashopApplication], contextInitializerClasses = [], activeProfiles = [], propertySourceLocations = [], propertySourceProperties = ["org.springframework.boot.test.context.SpringBootTestContextBootstrapper=true"], contextCustomizers = [org.springframework.boot.test.autoconfigure.actuate.observability.ObservabilityContextCustomizerFactory$DisableObservabilityContextCustomizer@9da1, org.springframework.boot.test.autoconfigure.properties.PropertyMappingContextCustomizer@0, org.springframework.boot.test.autoconfigure.web.servlet.WebDriverContextCustomizerFactory$Customizer@648c94da, org.springframework.boot.test.context.filter.ExcludeFilterContextCustomizer@6c0d9d86, org.springframework.boot.test.json.DuplicateJsonObjectContextCustomizerFactory$DuplicateJsonObjectContextCustomizer@5dcb4f5f, org.springframework.boot.test.mock.mockito.MockitoContextCustomizer@0, org.springframework.boot.test.web.client.TestRestTemplateContextCustomizer@51acdf2e, org.springframework.boot.test.context.SpringBootTestAnnotation@183891cd], resourceBasePath = "src/main/webapp", contextLoader = org.springframework.boot.test.context.SpringBootContextLoader, parent = null] at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:142) at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:127) at org.springframework.test.context.web.ServletTestExecutionListener.setUpRequestContextIfNecessary(ServletTestExecutionListener.java:191) at org.springframework.test.context.web.ServletTestExecutionListener.prepareTestInstance(ServletTestExecutionListener.java:130) at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:241) at org.springframework.test.context.junit.jupiter.SpringExtension.postProcessTestInstance(SpringExtension.java:138) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$invokeTestInstancePostProcessors$10(ClassBasedTestDescriptor.java:377) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.executeAndMaskThrowable(ClassBasedTestDescriptor.java:382) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$invokeTestInstancePostProcessors$11(ClassBasedTestDescriptor.java:377) at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1625) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.StreamSpliterators$WrappingSpliterator.forEachRemaining(StreamSpliterators.java:310) at java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:735) at java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:734) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:762) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.invokeTestInstancePostProcessors(ClassBasedTestDescriptor.java:376) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$instantiateAndPostProcessTestInstance$6(ClassBasedTestDescriptor.java:289) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.instantiateAndPostProcessTestInstance(ClassBasedTestDescriptor.java:288) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$4(ClassBasedTestDescriptor.java:278) at java.base/java.util.Optional.orElseGet(Optional.java:364) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$5(ClassBasedTestDescriptor.java:277) at org.junit.jupiter.engine.execution.TestInstancesProvider.getTestInstances(TestInstancesProvider.java:31) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$prepare$0(TestMethodTestDescriptor.java:105) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:104) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:68) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$prepare$2(NodeTestTask.java:123) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.prepare(NodeTestTask.java:123) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:90) at java.base/java.util.ArrayList.forEach(ArrayList.java:1511) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) at java.base/java.util.ArrayList.forEach(ArrayList.java:1511) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57) at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:107) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:114) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:86) at org.junit.platform.launcher.core.DefaultLauncherSession$DelegatingLauncher.execute(DefaultLauncherSession.java:86) at org.junit.platform.launcher.core.SessionPerRequestLauncher.execute(SessionPerRequestLauncher.java:53) at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.processAllTestClasses(JUnitPlatformTestClassProcessor.java:99) at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.access$000(JUnitPlatformTestClassProcessor.java:79) at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor.stop(JUnitPlatformTestClassProcessor.java:75) at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.stop(SuiteTestClassProcessor.java:62) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:568) at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36) at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24) at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:33) at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:94) at jdk.proxy1/jdk.proxy1.$Proxy2.stop(Unknown Source) at org.gradle.api.internal.tasks.testing.worker.TestWorker$3.run(TestWorker.java:193) at org.gradle.api.internal.tasks.testing.worker.TestWorker.executeAndMaintainThreadName(TestWorker.java:129) at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:100) at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:60) at org.gradle.process.internal.worker.child.ActionExecutionWorker.execute(ActionExecutionWorker.java:56) at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:113) at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:65) at worker.org.gradle.process.internal.worker.GradleWorkerMain.run(GradleWorkerMain.java:69) at worker.org.gradle.process.internal.worker.GradleWorkerMain.main(GradleWorkerMain.java:74) Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.MappingException: Could not instantiate id generator [entity-name=jpabook.jpashop.domain.OrderItem] at app//org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1751) at app//org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:599) at app//org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:521) at app//org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:326) at app//org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) at app//org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:324) at app//org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) at app//org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1130) at app//org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:905) at app//org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:584) at app//org.springframework.boot.SpringApplication.refresh(SpringApplication.java:730) at app//org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:432) at app//org.springframework.boot.SpringApplication.run(SpringApplication.java:308) at app//org.springframework.boot.test.context.SpringBootContextLoader.lambda$loadContext$3(SpringBootContextLoader.java:137) at app//org.springframework.util.function.ThrowingSupplier.get(ThrowingSupplier.java:59) at app//org.springframework.util.function.ThrowingSupplier.get(ThrowingSupplier.java:47) at app//org.springframework.boot.SpringApplication.withHook(SpringApplication.java:1386) at app//org.springframework.boot.test.context.SpringBootContextLoader$ContextLoaderHook.run(SpringBootContextLoader.java:543) at app//org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:137) at app//org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:108) at app//org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:184) at app//org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:118) ... 87 more Caused by: jakarta.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.MappingException: Could not instantiate id generator [entity-name=jpabook.jpashop.domain.OrderItem] at app//org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:421) at app//org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396) at app//org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:352) at app//org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1797) at app//org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1747) ... 108 more Caused by: org.hibernate.MappingException: Could not instantiate id generator [entity-name=jpabook.jpashop.domain.OrderItem] at app//org.hibernate.id.factory.internal.StandardIdentifierGeneratorFactory.createIdentifierGenerator(StandardIdentifierGeneratorFactory.java:222) at app//org.hibernate.mapping.SimpleValue.createIdentifierGenerator(SimpleValue.java:515) at app//org.hibernate.mapping.SimpleValue.createIdentifierGenerator(SimpleValue.java:372) at app//org.hibernate.internal.SessionFactoryImpl.lambda$new$1(SessionFactoryImpl.java:293) at java.base@17.0.3/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base@17.0.3/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base@17.0.3/java.util.HashMap$ValueSpliterator.forEachRemaining(HashMap.java:1779) at java.base@17.0.3/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base@17.0.3/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base@17.0.3/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base@17.0.3/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base@17.0.3/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base@17.0.3/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at app//org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:292) at app//org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:415) at app//org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1425) at app//org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:66) at app//org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:376) at app//org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409) ... 112 more Caused by: org.hibernate.HibernateException: Could not fetch the SequenceInformation from the database at app//org.hibernate.engine.jdbc.env.internal.ExtractedDatabaseMetaDataImpl.sequenceInformationList(ExtractedDatabaseMetaDataImpl.java:302) at app//org.hibernate.engine.jdbc.env.internal.ExtractedDatabaseMetaDataImpl.getSequenceInformationList(ExtractedDatabaseMetaDataImpl.java:151) at app//org.hibernate.id.enhanced.SequenceStyleGenerator.getSequenceIncrementValue(SequenceStyleGenerator.java:561) at app//org.hibernate.id.enhanced.SequenceStyleGenerator.configure(SequenceStyleGenerator.java:210) at app//org.hibernate.id.factory.internal.StandardIdentifierGeneratorFactory.createIdentifierGenerator(StandardIdentifierGeneratorFactory.java:217) ... 130 more Caused by: org.h2.jdbc.JdbcSQLSyntaxErrorException: Column "start_value" not found [42122-214] at app//org.h2.message.DbException.getJdbcSQLException(DbException.java:502) at app//org.h2.message.DbException.getJdbcSQLException(DbException.java:477) at app//org.h2.message.DbException.get(DbException.java:223) at app//org.h2.message.DbException.get(DbException.java:199) at app//org.h2.jdbc.JdbcResultSet.getColumnIndex(JdbcResultSet.java:3492) at app//org.h2.jdbc.JdbcResultSet.getLong(JdbcResultSet.java:745) at app//com.zaxxer.hikari.pool.HikariProxyResultSet.getLong(HikariProxyResultSet.java) at app//org.hibernate.tool.schema.extract.internal.SequenceInformationExtractorLegacyImpl.resultSetStartValueSize(SequenceInformationExtractorLegacyImpl.java:110) at app//org.hibernate.tool.schema.extract.internal.SequenceInformationExtractorLegacyImpl.lambda$extractMetadata$0(SequenceInformationExtractorLegacyImpl.java:54) at app//org.hibernate.tool.schema.extract.spi.ExtractionContext.getQueryResults(ExtractionContext.java:50) at app//org.hibernate.tool.schema.extract.internal.SequenceInformationExtractorLegacyImpl.extractMetadata(SequenceInformationExtractorLegacyImpl.java:39) at app//org.hibernate.engine.jdbc.env.internal.ExtractedDatabaseMetaDataImpl.sequenceInformationList(ExtractedDatabaseMetaDataImpl.java:286) ... 134 more  

(사진)

[질문 템플릿]1. 강의 내용과 관련된 질문인가요? 예2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? 예3. 질문 잘하기 메뉴얼을 읽어보셨나요? 예[질문 내용]"3.트랜잭션 이해.pdf" 수업자료 32, 44페이지의 memberB가 memberEx로 정정돼야할 것 같습니다!<32페이지> <44페이지>수업 너무 잘 듣고 있습니다. 감사합니다.

  2:50 부터 헤매고있는데요..intellij Community 버전을 다운받았고 새로운 프로젝트 설정할때 왼쪽 목록에 Spring Initializr이 보이지않아서 확인해보니 Community 버전인 경우 없다고하더라구요.Community버전이라, 2:50~ 설정하는부분을 진행할 수 없다면 따로 설정해야하는부분이 있을까요?

 안녕하세요. 다름이 아니라 나프1탄,2탄 때 잘만 구동되던 게 갑자기 404 에러가 떠서요 ㅠㅠ 중간에 인텔리제이에 톰캣 연동하느라 따로 톰캣을 다운받았었는데 그게 문제가 되는 걸까요? 구글링 하면서 웬만한 건 다 따라해봤는데 해결이 안돼서 여쭤봅니다..

10MB를 절대 넘지 를 않는데 무슨 이유 때문인지 계속 실패 메시지만 뜨네요 무슨 이유 인지를 잘 모르겠습니다. porm.xml과 tomcat에도 넣어줬으며 폴더도 다시 한번 새로 만들어서 해보았으나 사진이 업로드가 되지 않습니다.

안녕하세요, 우선 좋은 강의 만들어주셔서 너무 잘 듣고 있습니다.Spring 어노테이션의 의미를 대략은 알고 있었지만 자세히 알지 못하고 사용했던 것 같은데, 강의를 들으면서 하나씩 정리되어 가는 기분을 느끼고 있어서 많이 배우고 있습니다.듣다가 궁금한 점이 생겨서 부족한 질문이지만 남겨보게 되었습니다! 21강에서 설명해주신 Configuration + Bean 조합과 Component의 어노테이션 차이가 있을까요? 개발자가 직접 만든 클래스를 스프링 빈을 만들어줄 때 사용해주는 것으로 이해해서 같은 역할인 것 같은데 어떤 차이가 있을까? 라는 생각이 들었습니다.20강에서 설명해주신 @Primary, 그리고 21강에서 설명해주신 @Qualifier는 모두 스프링에서 여러 선택지가 있어서 선택하기 어려울 때 이게 우선순위야! 라고 알려주는 개념으로 이해하였는데요. 그럼 이 두가지도 같은 역할을 하는 것 같은데 어떤 차이가 있을까? 가 궁금해졌습니다. 직접 지정해주는 @Qualifier가 우선순위는 더 높지만, 두가지 다 사용하면 개인적으로는 버그가 있을 때 디버깅을 하기 어려워질 것 같은데 두가지 다 사용하는 경우도 있나요? (제가 현업에서 아직 경험해보지 못했을 수도 있을 것 같습니다 ^^;) 답변해주시면 많은 도움이 될 것 같습니다! 좋은 강의 만들어주셔서 감사드립니다 🙏🏻

[질문 템플릿]1. 강의 내용과 관련된 질문인가요? (예/아니오)2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? (예/아니오)3. 질문 잘하기 메뉴얼을 읽어보셨나요? (예/아니오)[질문 내용]'생성자 주입을 선택하라!' 강의 5분쯤에 나온 NullPointerException이 왜 발생한 건지 궁금합니다.@Component public class OrderServiceImpl implements OrderService { private MemberRepository memberRepository; private DiscountPolicy discountPolicy; @Autowired public void setMemberRepository(MemberRepository memberRepository) { this.memberRepository = memberRepository; } @Autowired public void setDiscountPolicy(DiscountPolicy discountPolicy) { this.discountPolicy = discountPolicy; } }class OrderServiceImplTest { @Test void createOrder() { OrderServiceImpl orderService = new OrderServiceImpl(); orderService.createOrder(1L, "itemA", 10000); } }@Autowired를 해주었기 때문에 자동으로 의존관계 주입이 되는 거 아닌가요?추가) AnnotationConfigApplicationContext로 스프링 빈을 등록하지 않아서 그런 건가요?

eGov 와 Intellij 둘쓰고 싶은데?안녕하세요 강의 잘듣고 연습하고 있습니다^^.eGovframe속에 내장된 mysql과 Intellij와 새로운mysql설치후 실행해보니 자꾸에러나는데어떻게하면 좋을까요? eGov속 mysql를 삭제해야하나요?

Entity에 private String phoneNm; entity는 대소문자 구분안되고 phone_nm으로 넘어가나요?  

[질문 템플릿]1. 강의 내용과 관련된 질문인가요? (예/아니오)2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? (예/아니오)3. 질문 잘하기 메뉴얼을 읽어보셨나요? (예/아니오)[질문 내용]여기에 질문 내용을 남겨주세요. 안녕하세요 코드 보다가 이해가 안가는 부분이 있어 질문드립니다!Number key 부분에서 key에 왜 타입으로 Number 타입이 쓰였는지 잘 이해가 안갑니다..모든 기본 자료형이 들어오게 Number 타입으로 받고 그걸 long 형으로 반환하도록 longValue()를 쓴건가요..?

 Description:The bean 'userRepository', defined in com.group.libraryapp.domain.user.UserRepository defined in @EnableJpaRepositories declared on JpaRepositoriesRegistrar.EnableJpaRepositoriesConfiguration, could not be registered. A bean with that name has already been defined in class path resource [com/group/libraryapp/config/UserConfiguration.class] and overriding is disabled.Action:Consider renaming one of the beans or enabling overriding by setting spring.main.allow-bean-definition-overriding=truedelete 부분까지 코딩 후에 테스트 진행하려고 , 컴파일 시에 위와 같은 오류가 발생하고 있습니다. 구글링으로 아래 action 부분도 해보았으나 다른 오류들이 발생하네요 ㅜㅜ

학습하는 분들께 도움이 되고, 더 좋은 답변을 드릴 수 있도록 질문전에 다음을 꼭 확인해주세요.1. 강의 내용과 관련된 질문을 남겨주세요.2. 인프런의 질문 게시판과 자주 하는 질문(링크)을 먼저 확인해주세요.(자주 하는 질문 링크: https://bit.ly/3fX6ygx)3. 질문 잘하기 메뉴얼(링크)을 먼저 읽어주세요.(질문 잘하기 메뉴얼 링크: https://bit.ly/2UfeqCG)질문 시에는 위 내용은 삭제하고 다음 내용을 남겨주세요.=========================================[질문 템플릿]1. 강의 내용과 관련된 질문인가요? (예/아니오) 예2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? (예/아니오) 예3. 질문 잘하기 메뉴얼을 읽어보셨나요? (예/아니오)예[질문 내용]강사님 강의 정말 잘 보고 있다가 의문점이 생겨 이렇게 질문 남깁니다. 일단 간단하게 예시를 만들면 양방향 관계로 묶인 Member와 Team이 있을때 Team을 삭제할때 해당 Team에 있던 Member도 전부 삭제를 원하는 상황입니다.데이터는 Team 2개 Team 하나당 3개의 Member씩이 있는 상태입니다.Member.javapackage com.example.demo.entity; import lombok.*; import javax.persistence.*; @Entity @Table(name = "member") @Getter @Setter @Builder @NoArgsConstructor @AllArgsConstructor public class Member { @Id @Column(name = "member_id") @GeneratedValue(strategy = GenerationType.IDENTITY) private Long memberId; @Column(name = "member_name") private String name; @ManyToOne(fetch = FetchType.LAZY) @JoinColumn(name = "team") private Team team; public Member(String name, Team team) { this.name = name; this.team = team; } } Team.javapackage com.example.demo.entity; import lombok.AllArgsConstructor; import lombok.Getter; import lombok.NoArgsConstructor; import lombok.Setter; import javax.persistence.*; import java.util.ArrayList; import java.util.List; @Entity @Getter @Setter @AllArgsConstructor @NoArgsConstructor @Table(name = "team") public class Team { @Id @Column(name = "team_id") @GeneratedValue(strategy = GenerationType.IDENTITY) private Long id; @OneToMany(mappedBy = "team", cascade = CascadeType.ALL, orphanRemoval = true) List<Member> members = new ArrayList<>(); }  controller.javapackage com.example.demo.entity.controller; import com.example.demo.entity.repository.TeamRepository; import lombok.RequiredArgsConstructor; import org.springframework.web.bind.annotation.DeleteMapping; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.bind.annotation.RestController; @RestController @RequiredArgsConstructor public class Controller { private final TeamRepository teamRepository; @DeleteMapping("/") public void deleteTeam(@RequestParam Long id) { teamRepository.deleteById(id); //deleteById는 JpaRepository에서 제공하는 기본 } } 위의 코드를 실행하고 delete요청을 했을때Hibernate:selectteam0_.team_id as team_id1_1_0_fromteam team0_whereteam0_.team_id=? Hibernate:selectmembers0_.team as team3_0_0_,members0_.member_id as member_i1_0_0_,members0_.member_id as member_i1_0_1_,members0_.member_name as member_n2_0_1_,members0_.team as team3_0_1_frommember members0_wheremembers0_.team=? Hibernate:deletefrommemberwheremember_id=? Hibernate:deletefrommemberwheremember_id=? Hibernate:deletefrommemberwheremember_id=? Hibernate:deletefromteamwhereteam_id=? 이렇게 나오고 Team의 members의 fetch type을 eager로 바꾸었을때는 selectteam0_.team_id as team_id1_1_0_,members1_.team as team3_0_1_,members1_.member_id as member_i1_0_1_,members1_.member_id as member_i1_0_2_,members1_.member_name as member_n2_0_2_,members1_.team as team3_0_2_fromteam team0_left outer joinmember members1_on team0_.team_id=members1_.teamwhereteam0_.team_id=? Hibernate:deletefrommemberwheremember_id=?Hibernate:deletefrommemberwheremember_id=? Hibernate:deletefrommemberwheremember_id=? Hibernate:deletefromteamwhereteam_id=?이러한 쿼리가 발생하는것을 볼 수 있습니다. 여기서 제가 든 궁금점은 (편의상 맨 위의 쿼리를 1번쿼리라 하겠습니다)지연로딩을 할때 Team의 Member는 프록시이므로 member select 하긴 할텐데 selectmembers0_.team as team3_0_0_,members0_.member_id as member_i1_0_0_,members0_.member_id as member_i1_0_1_,members0_.member_name as member_n2_0_1_,members0_.team as team3_0_1_이 쿼리(2번 쿼리)가 어떻게 나오게 된건지 이해가 되질 않습니다. 최대한 쿼리를 최적화 해보려 했지만 지연로딩을 할때 fetch join, entity graph등을 사용할 수 없어 1번과 2번 쿼리를 즉시로딩을 사용할때 처럼 최적화 할 수가 없었고 delete문도 멤버를 한번에 delete, 그다음 team delete 이렇게 두번으로 최적화 하고 싶었는데 방법이 떠오르질 않습니다. 정확하게 알려주시기 번거로우시면 키워드나 따로 어떻게 공부하면 해결 할 수 있을지 알려주시면 정말 감사드리겠습니다.  

학습하는 분들께 도움이 되고, 더 좋은 답변을 드릴 수 있도록 질문전에 다음을 꼭 확인해주세요.1. 강의 내용과 관련된 질문을 남겨주세요.2. 인프런의 질문 게시판과 자주 하는 질문(링크)을 먼저 확인해주세요.(자주 하는 질문 링크: https://bit.ly/3fX6ygx)3. 질문 잘하기 메뉴얼(링크)을 먼저 읽어주세요.(질문 잘하기 메뉴얼 링크: https://bit.ly/2UfeqCG)질문 시에는 위 내용은 삭제하고 다음 내용을 남겨주세요.=========================================[질문 템플릿]1. 강의 내용과 관련된 질문인가요? (예/아니오)2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? (예/아니오)3. 질문 잘하기 메뉴얼을 읽어보셨나요? (예/아니오)[질문 내용]여기에 질문 내용을 남겨주세요. 아래의 코드는 강의 코드 중 커넥션을 풀로 반환하는 로직입니다. 해당 코드에서는 커넥션 반환 중 예외가 발생했을 때 처리하는 별도의 코드가 없는 것으로 판단됩니다. 만약 con.close()가 정상 수행되지 않고, 예외가 발생한다면, 그 후 어떤 과정이 진행되는지 궁금합니다.그냥 계속해서 사용된 커넥션이 active 상태로 유지되는 건가요?항상 답변 해주셔서 감사합니다.

=========================================[질문 템플릿]1. 강의 내용과 관련된 질문인가요? (예/)2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? (예/)3. 질문 잘하기 메뉴얼을 읽어보셨나요? (예/)[질문 내용]커넥션 풀이라는게사람이랑 1:1 관계인거면 수천명이 이용하는 서비스면커넥션풀도 수천개를 준비해놔야 할까요?기본이 10개인데

강의 너무 잘 듣고 있습니다.강의 들으면서 영한님께 여쭤보고 싶은게 있습니다!MVC의 내부동작이나 스프링 프레임워크의 내부 동작은 어떤 방식으로 파악하시는지 궁금합니다.스프링 프레임워크가 너무 방대하다고 생각되서 디버깅으로 파악하기도 힘들다고 생각하는데, 어떤 방식으로 세세한 내부 구조를 파악하셨는지 궁금합니다.

학습하는 분들께 도움이 되고, 더 좋은 답변을 드릴 수 있도록 질문전에 다음을 꼭 확인해주세요.1. 강의 내용과 관련된 질문을 남겨주세요.2. 인프런의 질문 게시판과 자주 하는 질문(링크)을 먼저 확인해주세요.(자주 하는 질문 링크: https://bit.ly/3fX6ygx)3. 질문 잘하기 메뉴얼(링크)을 먼저 읽어주세요.(질문 잘하기 메뉴얼 링크: https://bit.ly/2UfeqCG)질문 시에는 위 내용은 삭제하고 다음 내용을 남겨주세요.=========================================[질문 템플릿]1. 강의 내용과 관련된 질문인가요? (예/)2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? (예)3. 질문 잘하기 메뉴얼을 읽어보셨나요? (예[질문 내용]h2로 웹사이트 들어가려는데 오류가 떠요 ㅠㅠ 왜이런거죠?