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] 16:47초에 실행하시는 통합테스트 코드 - 회원가입() 메서드 실행에서 에러가 납니다.. 에러 내용은 다음과 같습니다. could not prepare statement [Column "M1_0.USERNAME" not found; SQL statement: select m1_0.id,m1_0.username from member m1_0 where m1_0.username=? [42122-214]] [select m1_0.id,m1_0.username from member m1_0 where m1_0.username=?] org.hibernate.exception.SQLGrammarException: could not prepare statement [Column "M1_0.USERNAME" not found; SQL statement: select m1_0.id,m1_0.username from member m1_0 where m1_0.username=? [42122-214]] [select m1_0.id,m1_0.username from member m1_0 where m1_0.username=?] at app//org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert( SQLExceptionTypeDelegate.java:64 ) at app//org.hibernate.exception.internal.StandardSQLExceptionConverter.convert( StandardSQLExceptionConverter.java:56 ) at app//org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert( SqlExceptionHelper.java:108 ) at app//org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement( StatementPreparerImpl.java:187 ) at app//org.hibernate.engine.jdbc.internal.StatementPreparerImpl.prepareStatement( StatementPreparerImpl.java:76 ) at app//org.hibernate.sql.exec.internal.JdbcSelectExecutorStandardImpl.lambda$list$0( JdbcSelectExecutorStandardImpl.java:102 ) at app//org.hibernate.sql.results.jdbc.internal.DeferredResultSetAccess.executeQuery( DeferredResultSetAccess.java:226 ) at app//org.hibernate.sql.results.jdbc.internal.DeferredResultSetAccess.getResultSet( DeferredResultSetAccess.java:163 ) at app//org.hibernate.sql.results.jdbc.internal.JdbcValuesResultSetImpl.advanceNext( JdbcValuesResultSetImpl.java:254 ) at app//org.hibernate.sql.results.jdbc.internal.JdbcValuesResultSetImpl.processNext( JdbcValuesResultSetImpl.java:134 ) at app//org.hibernate.sql.results.jdbc.internal.AbstractJdbcValues.next( AbstractJdbcValues.java:19 ) at app//org.hibernate.sql.results.internal.RowProcessingStateStandardImpl.next( RowProcessingStateStandardImpl.java:66 ) at app//org.hibernate.sql.results.spi.ListResultsConsumer.consume( ListResultsConsumer.java:198 ) at app//org.hibernate.sql.results.spi.ListResultsConsumer.consume( ListResultsConsumer.java:33 ) at app//org.hibernate.sql.exec.internal.JdbcSelectExecutorStandardImpl.doExecuteQuery( JdbcSelectExecutorStandardImpl.java:361 ) at app//org.hibernate.sql.exec.internal.JdbcSelectExecutorStandardImpl.executeQuery( JdbcSelectExecutorStandardImpl.java:168 ) at app//org.hibernate.sql.exec.internal.JdbcSelectExecutorStandardImpl.list( JdbcSelectExecutorStandardImpl.java:93 ) at app//org.hibernate.sql.exec.spi.JdbcSelectExecutor.list( JdbcSelectExecutor.java:31 ) at app//org.hibernate.query.sqm.internal.ConcreteSqmSelectQueryPlan.lambda$new$0( ConcreteSqmSelectQueryPlan.java:110 ) at app//org.hibernate.query.sqm.internal.ConcreteSqmSelectQueryPlan.withCacheableSqmInterpretation( ConcreteSqmSelectQueryPlan.java:303 ) at app//org.hibernate.query.sqm.internal.ConcreteSqmSelectQueryPlan.performList( ConcreteSqmSelectQueryPlan.java:244 ) at app//org.hibernate.query.sqm.internal.QuerySqmImpl.doList( QuerySqmImpl.java:518 ) at app//org.hibernate.query.spi.AbstractSelectionQuery.list( AbstractSelectionQuery.java:367 ) at app//org.hibernate.query.Query.getResultList( Query.java:119 ) at app//hello.hellospring.repository.JpaMemberRepository.findByName( JpaMemberRepository.java:33 ) at app//hello.hellospring.service.MemberService.validateDuplicateMember( MemberService.java:33 ) at app//hello.hellospring.service.MemberService.join( MemberService.java:27 ) at java.base@17.0.4.1/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base@17.0.4.1/jdk.internal.reflect.NativeMethodAccessorImpl.invoke( NativeMethodAccessorImpl.java:77 ) at java.base@17.0.4.1/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke( DelegatingMethodAccessorImpl.java:43 ) at java.base@17.0.4.1/java.lang.reflect.Method.invoke( Method.java:568 ) at app//org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection( AopUtils.java:343 ) at app//org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint( ReflectiveMethodInvocation.java:196 ) at app//org.springframework.aop.framework.ReflectiveMethodInvocation.proceed( ReflectiveMethodInvocation.java:163 ) at app//org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed( CglibAopProxy.java:756 ) at app//org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation( TransactionInterceptor.java:123 ) at app//org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction( TransactionAspectSupport.java:391 ) at app//org.springframework.transaction.interceptor.TransactionInterceptor.invoke( TransactionInterceptor.java:119 ) at app//org.springframework.aop.framework.ReflectiveMethodInvocation.proceed( ReflectiveMethodInvocation.java:184 ) at app//org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed( CglibAopProxy.java:756 ) at app//org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept( CglibAopProxy.java:708 ) at app//hello.hellospring.service.MemberService$$SpringCGLIB$$0.join(<generated>) at app//hello.hellospring.service.MemberServiceIntegrationTest.회원가입( MemberServiceIntegrationTest.java:28 ) at java.base@17.0.4.1/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base@17.0.4.1/jdk.internal.reflect.NativeMethodAccessorImpl.invoke( NativeMethodAccessorImpl.java:77 ) at java.base@17.0.4.1/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke( DelegatingMethodAccessorImpl.java:43 ) at java.base@17.0.4.1/java.lang.reflect.Method.invoke( Method.java:568 ) at app//org.junit.platform.commons.util.ReflectionUtils.invokeMethod( ReflectionUtils.java:727 ) at app//org.junit.jupiter.engine.execution.MethodInvocation.proceed( MethodInvocation.java:60 ) at app//org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed( InvocationInterceptorChain.java:131 ) at app//org.junit.jupiter.engine.extension.TimeoutExtension.intercept( TimeoutExtension.java:156 ) at app//org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod( TimeoutExtension.java:147 ) at app//org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod( TimeoutExtension.java:86 ) at app//org.junit.jupiter.engine.execution.InterceptingExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0( InterceptingExecutableInvoker.java:103 ) at app//org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.lambda$invoke$0( InterceptingExecutableInvoker.java:93 ) at app//org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed( InvocationInterceptorChain.java:106 ) at app//org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed( InvocationInterceptorChain.java:64 ) at app//org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke( InvocationInterceptorChain.java:45 ) at app//org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke( InvocationInterceptorChain.java:37 ) at app//org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.invoke( InterceptingExecutableInvoker.java:92 ) at app//org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.invoke( InterceptingExecutableInvoker.java:86 ) at app//org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$7( TestMethodTestDescriptor.java:217 ) at app//org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute( ThrowableCollector.java:73 ) at app//org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod( TestMethodTestDescriptor.java:213 ) at app//org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute( TestMethodTestDescriptor.java:138 ) at app//org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute( TestMethodTestDescriptor.java:68 ) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6( NodeTestTask.java:151 ) at app//org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute( ThrowableCollector.java:73 ) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8( NodeTestTask.java:141 ) at app//org.junit.platform.engine.support.hierarchical.Node.around( Node.java:137 ) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9( NodeTestTask.java:139 ) at app//org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute( ThrowableCollector.java:73 ) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively( NodeTestTask.java:138 ) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.execute( NodeTestTask.java:95 ) at java.base@17.0.4.1/java.util.ArrayList.forEach( ArrayList.java:1511 ) at app//org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll( SameThreadHierarchicalTestExecutorService.java:41 ) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6( NodeTestTask.java:155 ) at app//org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute( ThrowableCollector.java:73 ) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8( NodeTestTask.java:141 ) at app//org.junit.platform.engine.support.hierarchical.Node.around( Node.java:137 ) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9( NodeTestTask.java:139 ) at app//org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute( ThrowableCollector.java:73 ) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively( NodeTestTask.java:138 ) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.execute( NodeTestTask.java:95 ) at java.base@17.0.4.1/java.util.ArrayList.forEach( ArrayList.java:1511 ) at app//org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll( SameThreadHierarchicalTestExecutorService.java:41 ) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6( NodeTestTask.java:155 ) at app//org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute( ThrowableCollector.java:73 ) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8( NodeTestTask.java:141 ) at app//org.junit.platform.engine.support.hierarchical.Node.around( Node.java:137 ) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9( NodeTestTask.java:139 ) at app//org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute( ThrowableCollector.java:73 ) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively( NodeTestTask.java:138 ) at app//org.junit.platform.engine.support.hierarchical.NodeTestTask.execute( NodeTestTask.java:95 ) at app//org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit( SameThreadHierarchicalTestExecutorService.java:35 ) at app//org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute( HierarchicalTestExecutor.java:57 ) at app//org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute( HierarchicalTestEngine.java:54 ) at app//org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute( EngineExecutionOrchestrator.java:107 ) at app//org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute( EngineExecutionOrchestrator.java:88 ) at app//org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0( EngineExecutionOrchestrator.java:54 ) at app//org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams( EngineExecutionOrchestrator.java:67 ) at app//org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute( EngineExecutionOrchestrator.java:52 ) at app//org.junit.platform.launcher.core.DefaultLauncher.execute( DefaultLauncher.java:114 ) at app//org.junit.platform.launcher.core.DefaultLauncher.execute( DefaultLauncher.java:86 ) at app//org.junit.platform.launcher.core.DefaultLauncherSession$DelegatingLauncher.execute( DefaultLauncherSession.java:86 ) at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.processAllTestClasses( JUnitPlatformTestClassProcessor.java:110 ) at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.access$000( JUnitPlatformTestClassProcessor.java:90 ) at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor.stop( JUnitPlatformTestClassProcessor.java:85 ) at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.stop( SuiteTestClassProcessor.java:62 ) at java.base@17.0.4.1/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base@17.0.4.1/jdk.internal.reflect.NativeMethodAccessorImpl.invoke( NativeMethodAccessorImpl.java:77 ) at java.base@17.0.4.1/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke( DelegatingMethodAccessorImpl.java:43 ) at java.base@17.0.4.1/java.lang.reflect.Method.invoke( Method.java:568 ) at org.gradle.internal.dispatch.ReflectionDispatch.dispatch( ReflectionDispatch.java:36 ) at org.gradle.internal.dispatch.ReflectionDispatch.dispatch( ReflectionDispatch.java:24 ) at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch( ContextClassLoaderDispatch.java:33 ) at org.gradle.internal.dispatch.ProxyDispatchAdapter$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 app//worker.org.gradle.process.internal.worker.GradleWorkerMain.run( GradleWorkerMain.java:69 ) at app//worker.org.gradle.process.internal.worker.GradleWorkerMain.main( GradleWorkerMain.java:74 ) Caused by: org.h2.jdbc.JdbcSQLSyntaxErrorException: Column "M1_0.USERNAME" not found; SQL statement: select m1_0.id,m1_0.username from member m1_0 where m1_0.username=? [42122-220] at org.h2.message.DbException.getJdbcSQLException( DbException.java:514 ) at org.h2.message.DbException.getJdbcSQLException( DbException.java:489 ) at org.h2.message.DbException.get( DbException.java:223 ) at org.h2.message.DbException.get( DbException.java:199 ) at org.h2.expression.ExpressionColumn.getColumnException( ExpressionColumn.java:244 ) at org.h2.expression.ExpressionColumn.optimizeOther( ExpressionColumn.java:226 ) at org.h2.expression.ExpressionColumn.optimize( ExpressionColumn.java:213 ) at org.h2.command.query.Select .prepareExpressions( Select.java:1170 ) at org.h2.command.query.Query.prepare( Query.java:218 ) at org.h2.command.Parser.prepareCommand( Parser.java:583 ) at org.h2.engine.SessionLocal.prepareLocal( SessionLocal.java:634 ) at org.h2.server.TcpServerThread.process( TcpServerThread.java:288 ) at org.h2.server.TcpServerThread.run ( TcpServerThread.java:191 ) at java.base/java.lang.Thread.run( Thread.java:833 ) at app//org.h2.message.DbException.getJdbcSQLException( DbException.java:502 ) at app//org.h2.engine.SessionRemote.readException( SessionRemote.java:637 ) at app//org.h2.engine.SessionRemote.done( SessionRemote.java:606 ) at app//org.h2.command.CommandRemote.prepare( CommandRemote.java:78 ) at app//org.h2.command.CommandRemote.<init>( CommandRemote.java:50 ) at app//org.h2.engine.SessionRemote.prepareCommand( SessionRemote.java:480 ) at app//org.h2.jdbc.JdbcConnection.prepareCommand( JdbcConnection.java:1116 ) at app//org.h2.jdbc.JdbcPreparedStatement.<init>( JdbcPreparedStatement.java:92 ) at app//org.h2.jdbc.JdbcConnection.prepareStatement( JdbcConnection.java:288 ) at app//com.zaxxer.hikari.pool.ProxyConnection.prepareStatement( ProxyConnection.java:327 ) at app//com.zaxxer.hikari.pool.HikariProxyConnection.prepareStatement( HikariProxyConnection.java ) at app//org.hibernate.engine.jdbc.internal.StatementPreparerImpl$1.doPrepare( StatementPreparerImpl.java:91 ) at app//org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement( StatementPreparerImpl.java:177 ) ... 123 more Java HotSpot(TM) 64-Bit Server VM warning: Sharing is only supported for boot loader classes because bootstrap classpath has been appended MemberServiceIntegrationTest > ȸ������() FAILED org.hibernate.exception.SQLGrammarException at MemberServiceIntegrationTest.java:28 Caused by: org.h2.jdbc.JdbcSQLSyntaxErrorException at MemberServiceIntegrationTest.java:28 2023-08-20T14:08:26.076+09:00 INFO 17356 --- [ionShutdownHook] j.LocalContainerEntityManagerFactoryBean : Closing JPA EntityManagerFactory for persistence unit 'default' 2023-08-20T14:08:26.079+09:00 INFO 17356 --- [ionShutdownHook] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown initiated... 2023-08-20T14:08:26.109+09:00 INFO 17356 --- [ionShutdownHook] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown completed. 1 test completed, 1 failed > Task :test FAILED FAILURE: Build failed with an exception. * What went wrong: Execution failed for task ':test'. > There were failing tests. See the report at: file:///C:/Users/man25/OneDrive/����%20ȭ��/������%20����/hello-spring/build/reports/tests/test/index.html * Try: > Run with --stacktrace option to get the stack trace. > Run with --info or --debug option to get more log output. > Run with --scan to get full insights. * Get more help at https://help.gradle.org BUILD FAILED in 22s 4 actionable tasks: 1 executed, 3 up-to-date 아래 사진은 application.properties 디렉터리의 코드입니다. 아래 사진은 SpringConfig 클래스의 코드입니다. 해결 방법을 모르겠네요ㅠㅠㅠ
미니블로그를 실행시키면 아래와 같은 에러가 브라우저 콘솔에 찍힙니다. 소스는 몇 번을 확인해서 잘 못 된 부분이 없다고 생각합니다. MainPage.jsx 부터 불러오질 못하네요. 뭐가 잘 못 됐는지 찾아주시면 고맙겠습니다. 아래는 App.js 에 PostWritePage, PostViewPage 를 빼고 실행했을 경우 브라우저 페이지 자체에 나오는 에러입니다. function App(props) { return ( <BrowserRouter> <MainTitleText>제플리카의 미니 블로그</MainTitleText> <Routes> <Route index element={<MainPage />} /> </Routes> </BrowserRouter> ); } Uncaught runtime errors: × ERROR Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: object. You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports. Check the render method of MainPage . Error: Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: object. You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports. Check the render method of MainPage . at createFiberFromTypeAndProps ( http://localhost:3000/static/js/bundle.js:36883:21 ) at createFiberFromElement ( http://localhost:3000/static/js/bundle.js:36904:19 ) at createChild ( http://localhost:3000/static/js/bundle.js:25473:32 ) at reconcileChildrenArray ( http://localhost:3000/static/js/bundle.js:25713:29 ) at reconcileChildFibers ( http://localhost:3000/static/js/bundle.js:26055:20 ) at reconcileChildren ( http://localhost:3000/static/js/bundle.js:28987:32 ) at updateHostComponent ( http://localhost:3000/static/js/bundle.js:29631:7 ) at beginWork ( http://localhost:3000/static/js/bundle.js:31076:18 ) at HTMLUnknownElement.callCallback ( http://localhost:3000/static/js/bundle.js:16062:18 ) at Object.invokeGuardedCallbackDev ( http://localhost:3000/static/js/bundle.js:16106:20 ) ERROR Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: object. You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports. Check the render method of MainPage . Error: Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: object. You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports. Check the render method of MainPage . at createFiberFromTypeAndProps ( http://localhost:3000/static/js/bundle.js:36883:21 ) at createFiberFromElement ( http://localhost:3000/static/js/bundle.js:36904:19 ) at createChild ( http://localhost:3000/static/js/bundle.js:25473:32 ) at reconcileChildrenArray ( http://localhost:3000/static/js/bundle.js:25713:29 ) at reconcileChildFibers ( http://localhost:3000/static/js/bundle.js:26055:20 ) at reconcileChildren ( http://localhost:3000/static/js/bundle.js:28987:32 ) at updateHostComponent ( http://localhost:3000/static/js/bundle.js:29631:7 ) at beginWork ( http://localhost:3000/static/js/bundle.js:31076:18 ) at HTMLUnknownElement.callCallback ( http://localhost:3000/static/js/bundle.js:16062:18 ) at Object.invokeGuardedCallbackDev ( http://localhost:3000/static/js/bundle.js:16106:20 ) ERROR Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: object. You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports. Check the render method of MainPage . Error: Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: object. You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports. Check the render method of MainPage . at createFiberFromTypeAndProps ( http://localhost:3000/static/js/bundle.js:36883:21 ) at createFiberFromElement ( http://localhost:3000/static/js/bundle.js:36904:19 ) at createChild ( http://localhost:3000/static/js/bundle.js:25473:32 ) at reconcileChildrenArray ( http://localhost:3000/static/js/bundle.js:25713:29 ) at reconcileChildFibers ( http://localhost:3000/static/js/bundle.js:26055:20 ) at reconcileChildren ( http://localhost:3000/static/js/bundle.js:28987:32 ) at updateHostComponent ( http://localhost:3000/static/js/bundle.js:29631:7 ) at beginWork ( http://localhost:3000/static/js/bundle.js:31076:18 ) at beginWork$1 ( http://localhost:3000/static/js/bundle.js:36015:18 ) at performUnitOfWork ( http://localhost:3000/static/js/bundle.js:35284:16 )
B유형이 나왔구 선생님 강의 듣고 매일 연습한 결과 아주 완벽하게 끝내고 왔습니다! 팁을 하나 드리자면 제가 맨처음에 시험을 시작할때 라이브서버나 한글버전의 비주얼 스튜디오가 설치되어 있지 않아서(영문버전) 일단 그냥 했는데 시험 도중에 웹 페이지에서 아무것도 CSS에 적은게 반영이 안되는겁니다... 감독관님을 손들며 부를 때 알게 되었죠 저장 누르면서 해야 적용될 것 같은데? 이생각을요 ㅠㅠ..(+추가드립니다! 시험장에서 영문버전 Auto Save 누르고 하였으나.. 적용이 안되어 비주얼 소프트웨어 문제인지 그거까지 둘다 Ctrl+S / 브라우저 F5를 번갈아가며 눌렀습니다 ;ㅅ;) Html, Css, jQuery를 저장하면서 홈페이지까지 F5로 새로고침을 계속 누르면서 해야되는게 많이 번거로웠습니다! 저의 작업순서는 와이어프레임 작성 (8분) --> 포토샵 열고 파일 정리(이미지 등등 크기에 맞게 자르고 텍스트까지 전부다 마침) (20분) --> 헤더로고, 푸터 모든 영역 완성 (5분) --> 바로 슬라이드 완성 (5분) --> news, gallery 완성 (10분) --> Navi 완성 (10분+10분 서브백 어떻게하는지 중간에 까먹음...!!그래도 완성) --> 그리고 나머지는 검토시간(10분정도) 이 순서로 했던 것 같습니다. 많은분들이 작업 순서를 고민하신다면 이렇게 해보시는걸 추천드립니다! (참고로....저는...시험 다 끝나고 제출할때까지도...용량 초과했는지 확인을 못했지만... 연습을 엄청나게 많이 해봤을때 아무리커봐야 2MB~3MB정도 일거라고 판단하여.. 95점정도의 고득점 예상합니다!) 다들 화이팅입니다! ㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡ 아차! 추가로 영문버전은 단축키(줄 삭제 / 줄 복제 / 줄 이동) 이런거는 단축키에 들어가셔서 "line" 이것만 쳐도 바로 상단에 전부다 몰려있으니 꼭 시험 시작하기전에 단축키부터 설정하고 하시면됩니다. 한글버전도 마찬가지구 이게 시험 시간 단축의 큰 도움이 될겁니다.
Express에서 데이터 처리하기 강의 수강 중에 생긴 오류 입니다. 이후에 포스트맨에서 body 수정 후 send 시에도 Error: connect ECONNREFUSED이 오류가 떳습니다. index.js를 실행 후에 웹 브라우저에 http://localhost:8080/products 입력하면 [{"name":"농구공","price":5000}] 이렇게 웹 화면에 뜨면서 node:events:492 thorw er;도 같이 뜨면서 서버 에러가 납니다 database.sqlite3을 vs코드 열었을 때는 위 사진처럼 뜨고 sqllite로 열었을 때는 읽을 수 없다고 뜹니다
안녕하세요! 존안님! html, css에 대해 많이 모르는 상태인데도 불구하고 이 강의를 열심히 따라 치고 공부하면서 조금이나마 알아가고 있는 수강생입니다! :) 다름이 아니라 제가 개발 블로그를 사용 중인데 내용을 정리하고, 이전에 공부했던 내용들을 다시 찾아보기 위해서 해당 강의를 보고 제가 정리한 내용을 출처 표기하고 올려도 되는지 궁금합니다! 제공되는 강의 자료는 아니고 따로 제가 보고 정리한 내용들만 올리려고 합니다. 감사합니다!
import React from "react"; function Book(props) { return ( <div> <h1>{'이 책의 이름은 ${props.name}입니다'}</h1> <h2>{'이 책은 총 ${props.numOfPage} 페이지로 이뤄져 있습니다.'}</h2> </div> ); } export default Book;
강의 대부분이 내용 skip이 되며, 이번 강의에서는 css파일 등이 공개가 되어 있지 않아 똑같이 따라하기가 너무나 힘듭니다. ㅠㅠ 기술을 배워 응요하는 것도 좋지만, 처음 학습시에는 시청한 강의와 똑같은 내용으로 만들어보고자 합니다. 해당 소스코드 (모델들, 세팅 index.js 소스코드, reset css)가 어딘가 공유가 되어있는지, 또는 공유가 가능한지 알고 싶습니다. 강의 내용 중 사용된 material 등도 제공 가능하신지 알고 싶습니다.
A1 작업시 공지사항, 갤러리 탭 만들때 <section><article class></article></section>, <div class> 중 어떤 태그 이용해서 제작합니까? 강의 중 <section><article></article></section> 태그로 제작하는 것도 있고 <div class> 태그로 제작하는 것도 있는데 각각 어떤 경우에 사용합니까?
오늘 강의 시작했는데 실습 예제 다운 받으려고 하니 저렇게 나오고 클릭이 안되네요 ㅜ 해결 방법 있을까요? 엣지 크롬 파이어폭스 셋다 저러네요 브라우저 보안 설정 떄문인가 해서 보안도 끄고 들어가봐도 저래요 아 그리고 실습예제 codepen 링크들어가서 보면 버튼눌러도 애니메이션이 반응이 없던데 .. 왜그런지 이유를 모르겠어요 다 그런건 아닌거같고 처음에 motionpath 예제만 그런거 같더라구요
