java.lang.AssertionError: Wrong diagnostic handler: com.sun.tools.javac.util.Log$DeferredDiagnosticHandler@1964f4b
   at com.sun.tools.javac.util.Assert.error(Assert.java:133)
   at com.sun.tools.javac.util.Assert.check(Assert.java:94)
   at com.sun.tools.javac.util.Log.popDiagnosticHandler(Log.java:467)
   at com.sun.tools.javac.api.JavacTaskImpl.attributeTree(JavacTaskImpl.java:765)
   at org.netbeans.api.java.source.TreeUtilities.attributeTree(TreeUtilities.java:662)
   at org.netbeans.modules.editor.java.JavaCodeTemplateProcessor.type(JavaCodeTemplateProcessor.java:683)
   at org.netbeans.modules.editor.java.JavaCodeTemplateProcessor.getProposedValue(JavaCodeTemplateProcessor.java:435)
   at org.netbeans.modules.editor.java.JavaCodeTemplateProcessor.updateDefaultValues(JavaCodeTemplateProcessor.java:152)
   at org.netbeans.lib.editor.codetemplates.CodeTemplateInsertHandler.processTemplate(CodeTemplateInsertHandler.java:248)
   at org.netbeans.lib.editor.codetemplates.CodeTemplateManagerOperation.insert(CodeTemplateManagerOperation.java:298)
   at org.netbeans.lib.editor.codetemplates.api.CodeTemplate.insert(CodeTemplate.java:107)
   at org.netbeans.modules.editor.java.JavaCompletionItem.process(JavaCompletionItem.java:518)
   at org.netbeans.modules.editor.java.JavaCompletionItem.defaultAction(JavaCompletionItem.java:283)
   at org.netbeans.modules.editor.java.LazyJavaCompletionItem.defaultAction(LazyJavaCompletionItem.java:147)
   at org.netbeans.modules.editor.java.JavaCompletionItem.instantSubstitution(JavaCompletionItem.java:351)
   at org.netbeans.modules.editor.java.JavaCompletionItem$WhiteListJavaCompletionItem.instantSubstitution(JavaCompletionItem.java:607)
   at org.netbeans.modules.editor.java.LazyJavaCompletionItem.instantSubstitution(LazyJavaCompletionItem.java:91)
   at org.netbeans.modules.editor.completion.CompletionImpl$7.run(CompletionImpl.java:1009)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:727)
   at java.awt.EventQueue.access$200(EventQueue.java:103)
   at java.awt.EventQueue$3.run(EventQueue.java:688)
   at java.awt.EventQueue$3.run(EventQueue.java:686)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:697)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)