javax.lang.model.element.UnknownElementException: Unknown element: HolaJava
   at javax.lang.model.util.AbstractElementVisitor6.visitUnknown(AbstractElementVisitor6.java:125)
   at javax.lang.model.element.ElementVisitor.visitModule(ElementVisitor.java:165)
   at javax.lang.model.util.AbstractElementVisitor6.visitModule(AbstractElementVisitor6.java:144)
   at com.sun.tools.javac.code.Symbol$ModuleSymbol.accept(Symbol.java:1014)
   at javax.lang.model.util.ElementScanner6.scan(ElementScanner6.java:153)
   at org.netbeans.modules.javanavigators.ElementScanningTask.run(ElementScanningTask.java:121)
   at org.netbeans.modules.javanavigators.ElementScanningTask.run(ElementScanningTask.java:80)
   at org.netbeans.modules.java.source.JavaSourceAccessor$CancelableTaskWrapper.run(JavaSourceAccessor.java:298)
   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)