java.lang.IllegalStateException: The current thread is not running userActionTask()
   at org.netbeans.modules.j2ee.metadata.model.api.support.annotation.AnnotationModelHelper.assertUserActionTaskThread(AnnotationModelHelper.java:316)
   at org.netbeans.modules.j2ee.metadata.model.api.support.annotation.AnnotationModelHelper.getAnnotationScanner(AnnotationModelHelper.java:294)
   at org.netbeans.modules.j2ee.persistenceapi.metadata.orm.annotation.EntityMappingsImpl$EntityProvider.createInitialObjects(EntityMappingsImpl.java:402)
   at org.netbeans.modules.j2ee.metadata.model.api.support.annotation.PersistentObjectManager.ensureInitialized(PersistentObjectManager.java:122)
   at org.netbeans.modules.j2ee.metadata.model.api.support.annotation.PersistentObjectManager.getObjects(PersistentObjectManager.java:101)
   at org.netbeans.modules.j2ee.persistenceapi.metadata.orm.annotation.EntityMappingsImpl.getEntity(EntityMappingsImpl.java:349)
   at org.netbeans.modules.j2ee.jpa.model.ModelUtils.getEntity(ModelUtils.java:109)
   at org.netbeans.modules.j2ee.jpa.verification.rules.attribute.RelationshipForEntityTypeAttrDefined.check(RelationshipForEntityTypeAttrDefined.java:88)
   at org.netbeans.modules.j2ee.jpa.verification.rules.entity.ValidAttributes.apply(ValidAttributes.java:199)
   at sun.reflect.GeneratedMethodAccessor368.invoke(GeneratedMethodAccessor368.java:0)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:606)
   at org.netbeans.modules.java.hints.providers.code.CodeHintProviderImpl$WorkerImpl.createErrors(CodeHintProviderImpl.java:336)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.runHint(HintsInvoker.java:790)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.doComputeHints(HintsInvoker.java:567)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHintsImpl(HintsInvoker.java:294)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:239)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:209)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:182)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:149)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsTask.run(HintsTask.java:114)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsTask.run(HintsTask.java:83)
   at org.netbeans.modules.java.source.JavaSourceAccessor$CancelableTaskWrapper.run(JavaSourceAccessor.java:298)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callParserResultTask(TaskProcessor.java:568)
   at org.netbeans.modules.parsing.impl.TaskProcessor$CompilationJob.run(TaskProcessor.java:744)
   at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
   at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
   at java.util.concurrent.FutureTask.run(FutureTask.java:166)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1432)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2042)