java.lang.NullPointerException
   at org.netbeans.modules.maven.execute.navigator.GoalsPanel$PluginChildren.createKeys(GoalsPanel.java:400)
   at org.openide.nodes.AsynchChildren.run(AsynchChildren.java:215)
   at org.openide.util.RequestProcessor$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$Processor.run(RequestProcessor.java:2058)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.NullPointerException
   at org.openide.util.RequestProcessor$Task.schedule(RequestProcessor.java:1484)
   at org.openide.nodes.AsynchChildren.addNotify(AsynchChildren.java:89)
   at org.openide.nodes.Children.callAddNotify(Children.java:575)
   at org.openide.nodes.EntrySupportDefault.getArray(EntrySupportDefault.java:650)
   at org.openide.nodes.EntrySupportDefault.getNodes(EntrySupportDefault.java:121)
   at org.openide.nodes.EntrySupportDefault.getNodes(EntrySupportDefault.java:172)
   at org.openide.nodes.EntrySupportDefault.getNodesCount(EntrySupportDefault.java:176)
   at org.openide.nodes.Children.getNodesCount(Children.java:509)
   at org.openide.explorer.view.VisualizerNode.getChildren(VisualizerNode.java:259)
   at org.openide.explorer.view.VisualizerNode.getChildren(VisualizerNode.java:249)
   at org.openide.explorer.view.VisualizerNode.getChildCount(VisualizerNode.java:326)
   at javax.swing.tree.DefaultTreeModel.getChildCount(DefaultTreeModel.java:186)
   at javax.swing.tree.FixedHeightLayoutCache$FHTreeStateNode.expand(FixedHeightLayoutCache.java:1153)
   at javax.swing.tree.FixedHeightLayoutCache.rebuild(FixedHeightLayoutCache.java:618)
   at javax.swing.tree.FixedHeightLayoutCache.treeStructureChanged(FixedHeightLayoutCache.java:490)
   at javax.swing.plaf.basic.BasicTreeUI$Handler.treeStructureChanged(BasicTreeUI.java:3917)
   at javax.swing.tree.DefaultTreeModel.fireTreeStructureChanged(DefaultTreeModel.java:580)
   at javax.swing.tree.DefaultTreeModel.nodeStructureChanged(DefaultTreeModel.java:365)
   at javax.swing.tree.DefaultTreeModel.setRoot(DefaultTreeModel.java:135)
   at org.openide.explorer.view.NodeTreeModel$1.run(NodeTreeModel.java:123)
   at org.netbeans.modules.openide.util.NbMutexEventProvider$Event.doEvent(NbMutexEventProvider.java:118)
   at org.netbeans.modules.openide.util.NbMutexEventProvider$Event.readAccess(NbMutexEventProvider.java:93)
   at org.netbeans.modules.openide.util.LazyMutexImplementation.readAccess(LazyMutexImplementation.java:89)
   at org.openide.util.Mutex.readAccess(Mutex.java:260)
   at org.openide.explorer.view.NodeTreeModel.setNode(NodeTreeModel.java:108)
   at org.openide.explorer.view.TreeView$4.run(TreeView.java:856)
   at org.netbeans.modules.openide.util.NbMutexEventProvider$Event.doEvent(NbMutexEventProvider.java:118)
   at org.netbeans.modules.openide.util.NbMutexEventProvider$Event.readAccess(NbMutexEventProvider.java:93)
   at org.netbeans.modules.openide.util.LazyMutexImplementation.readAccess(LazyMutexImplementation.java:89)
   at org.openide.util.Mutex.readAccess(Mutex.java:260)
   at org.openide.explorer.view.TreeView.synchronizeRootContext(TreeView.java:846)
   at org.openide.explorer.view.TreeView$TreePropertyListener$1.run(TreeView.java:1263)
   at org.netbeans.modules.openide.util.DefaultMutexImplementation.readAccess(DefaultMutexImplementation.java:193)
   at org.netbeans.modules.openide.util.DefaultMutexImplementation$1R.run(DefaultMutexImplementation.java:1037)
   at org.netbeans.modules.openide.util.DefaultMutexImplementation.doWrapperAccess(DefaultMutexImplementation.java:1054)
   at org.netbeans.modules.openide.util.DefaultMutexImplementation.readAccess(DefaultMutexImplementation.java:183)
   at org.openide.util.Mutex.readAccess(Mutex.java:260)
   at org.openide.explorer.view.TreeView$TreePropertyListener.propertyChange(TreeView.java:1260)
   at org.openide.util.WeakListenerImpl$PropertyChange.propertyChange(WeakListenerImpl.java:215)
   at java.beans.PropertyChangeSupport.fire(PropertyChangeSupport.java:335)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:327)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:263)
   at org.openide.explorer.ExplorerManager$2.run(ExplorerManager.java:891)
   at org.netbeans.modules.openide.util.NbMutexEventProvider$Event.doEvent(NbMutexEventProvider.java:118)
   at org.netbeans.modules.openide.util.NbMutexEventProvider$Event.readAccess(NbMutexEventProvider.java:93)
   at org.netbeans.modules.openide.util.LazyMutexImplementation.readAccess(LazyMutexImplementation.java:89)
   at org.openide.util.Mutex.readAccess(Mutex.java:260)
   at org.openide.explorer.ExplorerManager.fireInAWT(ExplorerManager.java:888)
   at org.openide.explorer.ExplorerManager$1SetRootContext.run(ExplorerManager.java:510)
   at org.netbeans.modules.openide.util.DefaultMutexImplementation.readAccess(DefaultMutexImplementation.java:193)
   at org.netbeans.modules.openide.util.DefaultMutexImplementation$1R.run(DefaultMutexImplementation.java:1037)
   at org.openide.nodes.Children$ProjectManagerDeadlockDetector.execute(Children.java:1938)
   at org.netbeans.modules.openide.util.DefaultMutexImplementation.doWrapperAccess(DefaultMutexImplementation.java:1056)
   at org.netbeans.modules.openide.util.DefaultMutexImplementation.readAccess(DefaultMutexImplementation.java:183)
   at org.openide.util.Mutex.readAccess(Mutex.java:260)
   at org.openide.explorer.ExplorerManager.setRootContext(ExplorerManager.java:523)
   at org.netbeans.modules.maven.execute.navigator.GoalsPanel$2.run(GoalsPanel.java:242)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:756)
   at java.awt.EventQueue.access$500(EventQueue.java:97)
   at java.awt.EventQueue$3.run(EventQueue.java:709)
   at java.awt.EventQueue$3.run(EventQueue.java:703)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:726)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)