java.lang.IllegalArgumentException: Was not listening to /tmp/aaa/src/test/resources
   at org.openide.filesystems.FileUtil.removeFileChangeListenerImpl(FileUtil.java:316)
   at org.openide.filesystems.FileUtil.removeRecursiveListener(FileUtil.java:425)
   at org.netbeans.modules.maven.cos.CopyResourcesOnSave.closed(CopyResourcesOnSave.java:111)
   at org.netbeans.modules.maven.ProjectOpenedHookImpl.projectClosed(ProjectOpenedHookImpl.java:288)
   at org.netbeans.spi.project.ui.ProjectOpenedHook$1.projectClosed(ProjectOpenedHook.java:89)
   at org.netbeans.spi.project.ui.support.UILookupMergerSupport$OpenHookImpl.projectClosed(UILookupMergerSupport.java:260)
   at org.netbeans.spi.project.ui.ProjectOpenedHook$1.projectClosed(ProjectOpenedHook.java:89)
   at org.netbeans.modules.project.ui.OpenProjectList.notifyClosed(OpenProjectList.java:1241)
   at org.netbeans.modules.project.ui.OpenProjectList.access$2500(OpenProjectList.java:137)
   at org.netbeans.modules.project.ui.OpenProjectList$10.run(OpenProjectList.java:915)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1454)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2043)