Could not resolve org.springframework.boot:spring-boot-starter-validation:2.4.4

gradle 프로젝트를 터미널에서 직접 refresh 시도를 했는데 다음과 같은 오류가 발생했습니다. D:\study\mvc2\validation-start>gradlew build --refresh-dependencies Starting a Gradle Daemon, 3 incompatible Daemons could not be reused, use --status for details FAILURE: Build failed with an exception. * What went wrong: A problem occurred configuring root project 'validation'. > Could not resolve all artifacts for configuration ':classpath'. > Could not resolve org.springframework.boot:spring-boot-buildpack-platform:2.4.4. Required by: project : > org.springframework.boot:org.springframework.boot.gradle.plugin:2.4.4 > org.springframework.boot:spring-boot-gradle-plugin:2.4.4 > Could not resolve org.springframework.boot:spring-boot-buildpack-platform:2.4.4. > Could not get resource 'https://plugins.gradle.org/m2/org/springframework/boot/spring-boot-buildpack-platform/2.4.4/spring-boot-buildpack-platform-2.4.4.pom'. > Could not HEAD 'https://repo.maven.apache.org/maven2/org/springframework/boot/spring-boot-buildpack-platform/2.4.4/spring-boot-buildpack-platform-2.4.4.pom'. > sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target > Could not resolve org.springframework.boot:spring-boot-loader-tools:2.4.4. Required by: project : > org.springframework.boot:org.springframework.boot.gradle.plugin:2.4.4 > org.springframework.boot:spring-boot-gradle-plugin:2.4.4 > Could not resolve org.springframework.boot:spring-boot-loader-tools:2.4.4. > Could not get resource 'https://plugins.gradle.org/m2/org/springframework/boot/spring-boot-loader-tools/2.4.4/spring-boot-loader-tools-2.4.4.pom'. > Could not HEAD 'https://repo.maven.apache.org/maven2/org/springframework/boot/spring-boot-loader-tools/2.4.4/spring-boot-loader-tools-2.4.4.pom'. > sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target > Could not resolve org.apache.commons:commons-compress:1.20. Required by: project : > org.springframework.boot:org.springframework.boot.gradle.plugin:2.4.4 > org.springframework.boot:spring-boot-gradle-plugin:2.4.4 > Could not resolve org.apache.commons:commons-compress:1.20. > Could not get resource 'https://plugins.gradle.org/m2/org/apache/commons/commons-compress/1.20/commons-compress-1.20.pom'. > Could not HEAD 'https://repo.maven.apache.org/maven2/org/apache/commons/commons-compress/1.20/commons-compress-1.20.pom'. > sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target > Could not resolve org.springframework:spring-core:5.3.5. Required by: project : > org.springframework.boot:org.springframework.boot.gradle.plugin:2.4.4 > org.springframework.boot:spring-boot-gradle-plugin:2.4.4 > Could not resolve org.springframework:spring-core:5.3.5. > Could not get resource 'https://plugins.gradle.org/m2/org/springframework/spring-core/5.3.5/spring-core-5.3.5.pom'. > Could not HEAD 'https://repo.maven.apache.org/maven2/org/springframework/spring-core/5.3.5/spring-core-5.3.5.pom'. > sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target * 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 10s