java.lang.UnsupportedOperationException: No JavaFileManager for location: CLASS_OUTPUT
   at org.netbeans.modules.java.source.parsing.ProxyFileManager.getJavaFileForOutput(ProxyFileManager.java:376)
   at com.sun.tools.javac.jvm.ClassWriter.writeClass(ClassWriter.java:1672)
   at com.sun.tools.javac.main.JavaCompiler.genCode(JavaCompiler.java:772)
   at com.sun.tools.javac.main.JavaCompiler.generate(JavaCompiler.java:1657)
   at com.sun.tools.javac.api.JavacTaskImpl$2.process(JavacTaskImpl.java:535)
   at com.sun.tools.javac.api.JavacTaskImpl$Filter.run(JavacTaskImpl.java:623)
   at com.sun.tools.javac.api.JavacTaskImpl.generate(JavacTaskImpl.java:538)
   at org.netbeans.modules.java.source.TreeLoader.dumpSymFile(TreeLoader.java:413)
   at org.netbeans.modules.java.source.TreeLoader.dumpSymFile(TreeLoader.java:372)
   at org.netbeans.modules.java.source.TreeLoader.loadTreeFor(TreeLoader.java:203)
   at com.sun.tools.javac.code.Symbol$ParamSymbol.getSimpleName(Symbol.java:1362)
   at com.sun.tools.javac.code.Symbol$ParamSymbol.toString(Symbol.java:1375)
   at com.sun.tools.javadoc.ParameterImpl.name(ParameterImpl.java:73)
   at org.netbeans.api.java.source.ui.ElementJavadoc.paramPos(ElementJavadoc.java:1914)
   at org.netbeans.api.java.source.ui.ElementJavadoc.inheritedDocFor(ElementJavadoc.java:1599)
   at org.netbeans.api.java.source.ui.ElementJavadoc.prepareContent(ElementJavadoc.java:620)
   at org.netbeans.api.java.source.ui.ElementJavadoc.<init>(ElementJavadoc.java:385)
   at org.netbeans.api.java.source.ui.ElementJavadoc.create(ElementJavadoc.java:166)
   at org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery$3.create(JavaCompletionProvider.java:276)
   at org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery$3.create(JavaCompletionProvider.java:272)
   at org.netbeans.modules.java.completion.JavaDocumentationTask.resolve(JavaDocumentationTask.java:112)
   at org.netbeans.modules.java.completion.BaseTask.run(BaseTask.java:92)
   at org.netbeans.modules.java.completion.JavaDocumentationTask.run(JavaDocumentationTask.java:62)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callUserTask(TaskProcessor.java:609)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:153)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:137)
   at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:204)
   at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:201)
   at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:176)
   at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:360)
   at org.netbeans.modules.parsing.nb.DataObjectEnvFactory.runPriorityIO(DataObjectEnvFactory.java:141)
   at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:88)
Caused: org.netbeans.modules.parsing.spi.ParseException
   at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:209)
   at org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:104)
   at org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery.query(JavaCompletionProvider.java:284)
   at org.netbeans.spi.editor.completion.support.AsyncCompletionTask.run(AsyncCompletionTask.java:223)
   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)