java.lang.NullPointerException
   at org.netbeans.modules.web.jsf.editor.actions.FixNamespacesPerformer.removeUnusedNamespaces(FixNamespacesPerformer.java:101)
   at org.netbeans.modules.web.jsf.editor.actions.FixNamespacesPerformer.access$200(FixNamespacesPerformer.java:62)
   at org.netbeans.modules.web.jsf.editor.actions.FixNamespacesPerformer$1.run(FixNamespacesPerformer.java:90)
   at org.netbeans.editor.GuardedDocument.runAtomic(GuardedDocument.java:321)
   at org.netbeans.modules.web.jsf.editor.actions.FixNamespacesPerformer.perform(FixNamespacesPerformer.java:82)
   at org.netbeans.modules.web.jsf.editor.actions.FixNamespacesAction.performFixNamespaces(FixNamespacesAction.java:173)
   at org.netbeans.modules.web.jsf.editor.actions.FixNamespacesAction.access$300(FixNamespacesAction.java:93)
   at org.netbeans.modules.web.jsf.editor.actions.FixNamespacesAction$4$1$1.run(FixNamespacesAction.java:230)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callUserTask(TaskProcessor.java:598)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:155)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:139)
   at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:206)
   at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:203)
   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:74)
Caused: org.netbeans.modules.parsing.spi.ParseException
   at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:211)
   at org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:106)
   at org.netbeans.modules.web.jsf.editor.actions.FixNamespacesAction$4$1.run(FixNamespacesAction.java:215)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1423)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)