how exactly do I solve this "Failed to add classpath entry for generated source folder annotations"?

[tigerinus]

Hello,

I have a Maven project that generates source code from WSDL file as part of the building process. The generated files are all in target/generated_sources folder.

Everytime when vscode-java needs to build the project, I get following error in the output:

[Error - 9:43:11 PM] Nov 4, 2021, 9:43:11 PM Failed to add classpath entry for generated source folder annotations
Cannot nest 'flight-supplier-pyton2-common/target/generated-sources/annotations' inside 'flight-supplier-pyton2-common/target/generated-sources'. To enable the nesting exclude 'annotations/' from 'flight-supplier-pyton2-common/target/generated-sources'
Java Model Exception: Error in Java Model (code 964): Cannot nest 'flight-supplier-pyton2-common/target/generated-sources/annotations' inside 'flight-supplier-pyton2-common/target/generated-sources'. To enable the nesting exclude 'annotations/' from 'flight-supplier-pyton2-common/target/generated-sources'
	at org.eclipse.jdt.internal.core.JavaModelOperation.runOperation(JavaModelOperation.java:802)
	at org.eclipse.jdt.internal.core.JavaProject.setRawClasspath(JavaProject.java:3656)
	at org.eclipse.jdt.internal.core.JavaProject.setRawClasspath(JavaProject.java:3616)
	at org.eclipse.jdt.internal.core.JavaProject.setRawClasspath(JavaProject.java:3672)
	at org.eclipse.jdt.apt.core.internal.generatedfile.ClasspathUtil.updateProjectClasspath(ClasspathUtil.java:215)
	at org.eclipse.jdt.apt.core.internal.generatedfile.GeneratedSourceFolderManager.addToClasspath(GeneratedSourceFolderManager.java:134)
	at org.eclipse.jdt.apt.core.internal.generatedfile.GeneratedSourceFolderManager.ensureFolderExists(GeneratedSourceFolderManager.java:194)
	at org.eclipse.jdt.apt.core.internal.generatedfile.GeneratedSourceFolderManager.ensureFolderExists(GeneratedSourceFolderManager.java:228)
	at org.eclipse.jdt.apt.core.internal.generatedfile.GeneratedFileManager.compilationStarted(GeneratedFileManager.java:365)
	at org.eclipse.jdt.apt.core.internal.AptProject.compilationStarted(AptProject.java:67)
	at org.eclipse.jdt.apt.core.internal.AptCompilationParticipant.aboutToBuild(AptCompilationParticipant.java:262)
	at org.eclipse.jdt.internal.core.builder.JavaBuilder.initializeBuilder(JavaBuilder.java:631)
	at org.eclipse.jdt.internal.core.builder.JavaBuilder.build(JavaBuilder.java:181)
	at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:853)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:232)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:281)
	at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:334)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:337)
	at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:389)
	at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:410)
	at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:160)
	at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:251)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)

Should I care about this error? How do I get rid of it?

[snjeza]

@tigerinus you may want to take a look at #177 (comment)