java.lang.NullPointerException
   at org.netbeans.modules.web.jsf.editor.JsfHtmlExtension.completeAttributes(JsfHtmlExtension.java:326)
   at org.netbeans.modules.html.editor.completion.HtmlCompletionQuery.query(HtmlCompletionQuery.java:484)
   at org.netbeans.modules.html.editor.completion.HtmlCompletionQuery$1.run(HtmlCompletionQuery.java:140)
   at org.netbeans.editor.BaseDocument.render(BaseDocument.java:1343)
   at org.netbeans.modules.html.editor.completion.HtmlCompletionQuery.run(HtmlCompletionQuery.java:133)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callUserTask(TaskProcessor.java:583)
   at org.netbeans.modules.parsing.api.ParserManager$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$2.call(TaskProcessor.java:197)
   at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:168)
   at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:360)
   at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:72)
Caused: org.netbeans.modules.parsing.spi.ParseException
   at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:205)
   at org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:102)
   at org.netbeans.modules.html.editor.completion.HtmlCompletionQuery.query(HtmlCompletionQuery.java:116)
   at org.netbeans.modules.html.editor.completion.HtmlCompletionProvider$Query.doQuery(HtmlCompletionProvider.java:127)
   at org.netbeans.modules.html.editor.completion.HtmlCompletionProvider$AbstractQuery.query(HtmlCompletionProvider.java:249)
   at org.netbeans.spi.editor.completion.support.AsyncCompletionTask.run(AsyncCompletionTask.java:223)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1452)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2032)