java.lang.NullPointerException: The bootPath parameter cannot be null
   at org.openide.util.Parameters.notNull(Parameters.java:89)
   at org.netbeans.api.java.source.ClasspathInfo.create(ClasspathInfo.java:326)
   at org.netbeans.modules.java.hints.spiimpl.batch.BatchUtilities.sortFiles(BatchUtilities.java:398)
   at org.netbeans.modules.java.hints.spiimpl.batch.BatchSearch.getLocalVerifiedSpans(BatchSearch.java:226)
   at org.netbeans.modules.java.hints.spiimpl.batch.BatchSearch.access$600(BatchSearch.java:98)
   at org.netbeans.modules.java.hints.spiimpl.batch.BatchSearch$LocalIndexEnquirer.validateResource(BatchSearch.java:553)
   at org.netbeans.modules.java.hints.spiimpl.batch.BatchSearch.getVerifiedSpans(BatchSearch.java:206)
   at org.netbeans.modules.java.hints.spiimpl.batch.BatchUtilities.applyFixes(BatchUtilities.java:182)
   at org.netbeans.modules.java.hints.onsave.RemoveUnusedAfterSave.performTask(RemoveUnusedAfterSave.java:108)
   at org.netbeans.modules.editor.lib.BeforeSaveTasks$TaskRunnable$1.run(BeforeSaveTasks.java:151)
   at org.netbeans.editor.GuardedDocument.runAtomicAsUser(GuardedDocument.java:347)
   at org.netbeans.modules.editor.lib.BeforeSaveTasks$TaskRunnable.run(BeforeSaveTasks.java:138)
   at org.netbeans.modules.editor.lib.TrailingWhitespaceRemove.runLocked(TrailingWhitespaceRemove.java:102)
   at org.netbeans.modules.editor.lib.BeforeSaveTasks$TaskRunnable.run(BeforeSaveTasks.java:134)
   at org.netbeans.modules.editor.impl.ReformatBeforeSaveTask.runLocked(ReformatBeforeSaveTask.java:125)
   at org.netbeans.modules.editor.lib.BeforeSaveTasks$TaskRunnable.run(BeforeSaveTasks.java:134)
   at org.netbeans.modules.java.hints.onsave.RemoveUnusedAfterSave$1.run(RemoveUnusedAfterSave.java:121)
   at org.netbeans.modules.java.hints.onsave.RemoveUnusedAfterSave$1.run(RemoveUnusedAfterSave.java:119)
   at org.netbeans.api.java.source.JavaSource$MultiTask.run(JavaSource.java:488)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callUserTask(TaskProcessor.java:583)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:150)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:134)
   at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:200)
   at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:197)
   at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:176)
   at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:360)
   at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:72)
   at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:197)
   at org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:102)
   at org.netbeans.api.java.source.JavaSource.runUserActionTaskImpl(JavaSource.java:438)
   at org.netbeans.api.java.source.JavaSource.runUserActionTask(JavaSource.java:409)
   at org.netbeans.modules.java.hints.onsave.RemoveUnusedAfterSave.runLocked(RemoveUnusedAfterSave.java:119)
   at org.netbeans.modules.editor.lib.BeforeSaveTasks$TaskRunnable.run(BeforeSaveTasks.java:134)
   at org.netbeans.modules.editor.lib.BeforeSaveTasks.runTasks(BeforeSaveTasks.java:110)
   at org.netbeans.modules.editor.lib.BeforeSaveTasks$1.run(BeforeSaveTasks.java:91)
   at org.openide.text.CloneableEditorSupport.saveDocument(CloneableEditorSupport.java:1134)
   at org.openide.text.DataEditorSupport.superSaveDoc(DataEditorSupport.java:606)
   at org.openide.text.DataEditorSupport$SaveImpl.run(DataEditorSupport.java:1304)
   at org.openide.filesystems.EventControl.runAtomicAction(EventControl.java:127)
   at org.openide.filesystems.FileSystem.runAtomicAction(FileSystem.java:607)
   at org.openide.filesystems.FileUtil.runAtomicAction(FileUtil.java:603)
   at org.openide.text.DataEditorSupport.saveDocument(DataEditorSupport.java:602)
   at org.netbeans.modules.openide.loaders.SimpleES$SaveCookieImpl.save(SimpleES.java:226)
   at org.netbeans.modules.java.ui.FmtImports$ImportsCategorySupport.refreshPreview(FmtImports.java:740)
   at org.netbeans.modules.options.indentation.FormattingPanel$3.run(FormattingPanel.java:204)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:721)
   at java.awt.EventQueue.access$200(EventQueue.java:103)
   at java.awt.EventQueue$3.run(EventQueue.java:682)
   at java.awt.EventQueue$3.run(EventQueue.java:680)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:691)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:158)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:244)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:163)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:147)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:139)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)