java.lang.AssertionError
   at com.sun.tools.javac.util.Assert.error(Assert.java:155)
   at com.sun.tools.javac.util.Assert.check(Assert.java:46)
   at com.sun.tools.javac.jvm.ClassReader$3.read(ClassReader.java:1064)
   at com.sun.tools.javac.jvm.ClassReader.readAttrs(ClassReader.java:1556)
   at com.sun.tools.javac.jvm.ClassReader.readMemberAttrs(ClassReader.java:1546)
   at com.sun.tools.javac.jvm.ClassReader.readField(ClassReader.java:2364)
   at com.sun.tools.javac.jvm.ClassReader.readClass(ClassReader.java:2661)
   at com.sun.tools.javac.jvm.ClassReader.readClassBuffer(ClassReader.java:2728)
   at com.sun.tools.javac.jvm.ClassReader.readClassFile(ClassReader.java:2741)
   at com.sun.tools.javac.code.ClassFinder.fillIn(ClassFinder.java:370)
   at com.sun.tools.javac.code.ClassFinder.complete(ClassFinder.java:294)
   at com.sun.tools.javac.code.Symbol.complete(Symbol.java:636)
   at com.sun.tools.javac.code.Symbol$ClassSymbol.complete(Symbol.java:1327)
   at com.sun.tools.javac.model.JavacElements.binaryNameToClassSymbol(JavacElements.java:337)
   at com.sun.tools.javac.model.JavacElements.unboundBinaryNameToClassSymbol(JavacElements.java:294)
   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.modules.java.source.ui.AsyncJavaSymbolDescriptor.resolve(AsyncJavaSymbolDescriptor.java:238)
   at org.netbeans.modules.java.source.ui.AsyncJavaSymbolDescriptor.lambda$initialize$23(AsyncJavaSymbolDescriptor.java:185)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.AssertionError
   at org.openide.util.RequestProcessor.execute(RequestProcessor.java:410)
   at org.netbeans.modules.java.source.ui.AsyncJavaSymbolDescriptor.initialize(AsyncJavaSymbolDescriptor.java:188)
   at org.netbeans.modules.java.source.ui.AsyncJavaSymbolDescriptor.getSymbolName(AsyncJavaSymbolDescriptor.java:142)
   at org.netbeans.modules.jumpto.quicksearch.GoToSymbolProvider.evaluate(GoToSymbolProvider.java:80)
   at org.netbeans.modules.quicksearch.CommandEvaluator$3.run(CommandEvaluator.java:265)
   at org.openide.util.RequestProcessor$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)