Execution failed for task ':standalone-server:shadowJar': java.lang.IllegalArgumentException: Unsupported class file major version 65 at org.objectweb.asm.ClassReader.<init>(ClassReader.java:199) at org.objectweb.asm.ClassReader.<init>(ClassReader.java:180) at org.objectweb.asm.ClassReader.<init>(ClassReader.java:166) at org.objectweb.asm.ClassReader.<init>(ClassReader.java:287) at com.github.jengelman.gradle.plugins.shadow.tasks.ShadowCopyAction$StreamAction.remapClass(ShadowCopyAction.groovy:339) at com.github.jengelman.gradle.plugins.shadow.tasks.ShadowCopyAction$StreamAction.remapClass(ShadowCopyAction.groovy:317) at com.github.jengelman.gradle.plugins.shadow.tasks.ShadowCopyAction$StreamAction.visitArchiveFile(ShadowCopyAction.groovy:286) at com.github.jengelman.gradle.plugins.shadow.tasks.ShadowCopyAction$StreamAction$_processArchive_closure3.doCall$original(ShadowCopyAction.groovy:263) at groovy.lang.Closure.call(Closure.java:412) at groovy.lang.Closure.call(Closure.java:428) at com.github.jengelman.gradle.plugins.shadow.tasks.ShadowCopyAction$StreamAction.processArchive(ShadowCopyAction.groovy:261) at com.github.jengelman.gradle.plugins.shadow.tasks.ShadowCopyAction$StreamAction.visitFile(ShadowCopyAction.groovy:246) at com.github.jengelman.gradle.plugins.shadow.tasks.ShadowCopyAction$BaseStreamAction.processFile(ShadowCopyAction.groovy:181) at org.gradle.api.internal.file.copy.NormalizingCopyActionDecorator.lambda$execute$0(NormalizingCopyActionDecorator.java:72) at org.gradle.api.internal.file.copy.DuplicateHandlingCopyActionDecorator.lambda$execute$0(DuplicateHandlingCopyActionDecorator.java:71) at org.gradle.api.internal.file.copy.CopyFileVisitorImpl.processFile(CopyFileVisitorImpl.java:68) at org.gradle.api.internal.file.copy.CopyFileVisitorImpl.visitFile(CopyFileVisitorImpl.java:52) at org.gradle.api.internal.file.collections.DirectoryFileTree.processSingleFile(DirectoryFileTree.java:136) at org.gradle.api.internal.file.collections.DirectoryFileTree.visitFrom(DirectoryFileTree.java:123) at org.gradle.api.internal.file.collections.DirectoryFileTree.visit(DirectoryFileTree.java:111) at org.gradle.api.internal.file.collections.FileTreeAdapter.visit(FileTreeAdapter.java:110) at org.gradle.api.internal.file.CompositeFileTree.visit(CompositeFileTree.java:108) at org.gradle.api.internal.file.copy.CopySpecActionImpl.execute(CopySpecActionImpl.java:43) at org.gradle.api.internal.file.copy.CopySpecActionImpl.execute(CopySpecActionImpl.java:25) at org.gradle.api.internal.file.copy.DefaultCopySpec$DefaultCopySpecResolver.walk(DefaultCopySpec.java:851) at org.gradle.api.internal.file.copy.DefaultCopySpec$DefaultCopySpecResolver.walk(DefaultCopySpec.java:853) at org.gradle.api.internal.file.copy.DefaultCopySpec.walk(DefaultCopySpec.java:570) at org.gradle.api.internal.file.copy.CopySpecBackedCopyActionProcessingStream.process(CopySpecBackedCopyActionProcessingStream.java:42) at org.gradle.api.internal.file.copy.DuplicateHandlingCopyActionDecorator.lambda$execute$1(DuplicateHandlingCopyActionDecorator.java:51) at org.gradle.api.internal.file.copy.NormalizingCopyActionDecorator.lambda$execute$1(NormalizingCopyActionDecorator.java:64) at com.github.jengelman.gradle.plugins.shadow.tasks.ShadowCopyAction$2.execute(ShadowCopyAction.groovy:108) at org.gradle.internal.classpath.intercept.DefaultCallSiteDecorator$DecoratingCallSite.access$101(DefaultCallSiteDecorator.java:156) at org.gradle.internal.classpath.intercept.DefaultCallSiteDecorator$DecoratingCallSite$1.callOriginal(DefaultCallSiteDecorator.java:170) at org.gradle.internal.classpath.Instrumented$ProcessGroovyMethodsExecuteInterceptor.doIntercept(Instrumented.java:715) at org.gradle.internal.classpath.intercept.DefaultCallSiteDecorator$DecoratingCallSite.call(DefaultCallSiteDecorator.java:16