java.lang.IllegalStateException: Annotation not added: se-jocke-nb-eslint-jslinterrorannotation 'util' is assigned a value but never used. (no-unused-vars) (Column: 5)
   at org.netbeans.modules.editor.NbEditorDocument.removeAnnotation(NbEditorDocument.java:264)
   at org.openide.text.NbDocument.removeAnnotation(NbDocument.java:533)
   at org.openide.text.DocumentLine$Part.attachDetachAnnotations(DocumentLine.java:861)
   at org.openide.text.DocumentLine.attachDetachAnnotations(DocumentLine.java:449)
   at org.openide.text.DocumentLine.documentOpenedClosed(DocumentLine.java:900)
   at org.openide.text.DocumentOpenClose$2.updateLine(DocumentOpenClose.java:510)
   at org.openide.text.LineVector.updateLinesCheck(LineVector.java:204)
   at org.openide.text.LineVector.unlockCheckUpdate(LineVector.java:428)
   at org.openide.text.LineVector.updateLines(LineVector.java:179)
   at org.openide.text.DocumentOpenClose.updateLines(DocumentOpenClose.java:506)
   at org.openide.text.DocumentOpenClose$DocumentClose.run(DocumentOpenClose.java:985)
   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)