java.lang.NullPointerException
   at com.sun.tools.javac.processing.JavacProcessingEnvironment$Round.unrecoverableError(JavacProcessingEnvironment.java:1153)
   at com.sun.tools.javac.processing.JavacProcessingEnvironment.doProcessing(JavacProcessingEnvironment.java:1323)
   at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1329)
   at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1217)
   at com.sun.tools.javac.main.JavaCompiler.lambda$readSourceFile$191(JavaCompiler.java:910)
   at com.sun.tools.javac.code.ClassFinder.complete(ClassFinder.java:315)
   at com.sun.tools.javac.code.Symbol.complete(Symbol.java:636)
   at com.sun.tools.javac.code.Symbol$ClassSymbol.complete(Symbol.java:1325)
   at com.sun.tools.javac.model.JavacElements.binaryNameToClassSymbol(JavacElements.java:337)
   at com.sun.tools.javac.model.JavacElements.unboundBinaryNameToClassSymbol(JavacElements.java:288)
   at com.sun.tools.javac.model.JavacElements.getTypeElementByBinaryName(JavacElements.java:275)
   at com.sun.tools.javac.model.JavacElements.getTypeElementByBinaryName(JavacElements.java:260)
   at org.netbeans.api.java.source.ElementHandle.getTypeElementByBinaryName(ElementHandle.java:664)
   at org.netbeans.api.java.source.ElementHandle.resolveImpl(ElementHandle.java:167)
   at org.netbeans.api.java.source.ElementHandle.resolve(ElementHandle.java:143)
   at org.netbeans.modules.java.editor.overridden.ComputeOverriders$1.run(ComputeOverriders.java:496)
   at org.netbeans.modules.java.editor.overridden.ComputeOverriders$1.run(ComputeOverriders.java:484)
   at org.netbeans.modules.java.source.parsing.MimeTask.run(MimeTask.java:83)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callUserTask(TaskProcessor.java:609)
   at org.netbeans.modules.parsing.api.ParserManager$MimeTaskAction.run(ParserManager.java:380)
   at org.netbeans.modules.parsing.api.ParserManager$MimeTaskAction.run(ParserManager.java:363)
   at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:204)
   at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:201)
   at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:176)
   at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:360)
   at org.netbeans.modules.parsing.nb.DataObjectEnvFactory.runPriorityIO(DataObjectEnvFactory.java:141)
   at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:90)
   at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:201)
   at org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:334)
   at org.netbeans.api.java.source.JavaSource.runUserActionTaskImpl(JavaSource.java:452)
   at org.netbeans.api.java.source.JavaSource.runUserActionTask(JavaSource.java:444)
   at org.netbeans.modules.java.editor.overridden.ComputeOverriders.findOverriddenAnnotations(ComputeOverriders.java:484)
   at org.netbeans.modules.java.editor.overridden.ComputeOverriders.computeOverridingForRoot(ComputeOverriders.java:268)
   at org.netbeans.modules.java.editor.overridden.ComputeOverriders.processImpl(ComputeOverriders.java:254)
   at org.netbeans.modules.java.editor.overridden.ComputeOverriders.process(ComputeOverriders.java:177)
   at org.netbeans.modules.java.editor.overridden.ComputeAnnotations.computeAnnotations(ComputeAnnotations.java:127)
   at org.netbeans.modules.java.editor.overridden.ComputeAnnotations.run(ComputeAnnotations.java:108)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callParserResultTask(TaskProcessor.java:584)
   at org.netbeans.modules.parsing.impl.TaskProcessor$RequestPerformer.run(TaskProcessor.java:809)
   at org.openide.util.lookup.Lookups.executeWith(Lookups.java:304)
   at org.netbeans.modules.parsing.impl.TaskProcessor$RequestPerformer.execute(TaskProcessor.java:725)
   at org.netbeans.modules.parsing.impl.TaskProcessor$CompilationJob.run(TaskProcessor.java:686)
   at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
   at java.util.concurrent.FutureTask.run(FutureTask.java:266)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1443)
   at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:68)
   at org.openide.util.lookup.Lookups.executeWith(Lookups.java:303)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2058)