java.lang.NullPointerException: Null child at index 0, parent: ObjectArrayFieldVariable [ 0], model: org.netbeans.spi.viewmodel.Models$CompoundModel@633db8f2
  TreeModel = org.netbeans.spi.viewmodel.Models$CompoundTreeModel@63c5e316
    org.netbeans.modules.debugger.jpda.models.PendingActionsFilter@5b00de4f
      org.netbeans.modules.debugger.jpda.ui.models.VariablesTreeModelFilter@56dc785a
        org.netbeans.modules.debugger.jpda.ui.models.VariablesTreeModelFilterSI@24618943
          org.netbeans.spi.viewmodel.Models$DelegatingTreeModel@73ca9392
    org.netbeans.modules.debugger.jpda.models.LocalsTreeModel@431fd172
  NodeModel = org.netbeans.spi.viewmodel.Models$CompoundNodeModel@4417ce2
    org.netbeans.modules.debugger.jpda.models.LabelVarsFilter@7f7aa05d
      org.netbeans.modules.debugger.jpda.ui.models.VariablesTreeModelFilter@56dc785a
        org.netbeans.modules.debugger.jpda.ui.models.VariablesTreeModelFilterSI@24618943
        org.netbeans.modules.debugger.jpda.ui.models.VariablesNodeModel@5b6784
   at org.netbeans.modules.viewmodel.TreeModelNode$TreeModelChildren.applyChildren(TreeModelNode.java:1418)
   at org.netbeans.modules.viewmodel.TreeModelNode$TreeModelChildren.refreshLazyChildren(TreeModelNode.java:1395)
   at org.netbeans.modules.viewmodel.TreeModelNode$TreeModelChildren.refreshChildren(TreeModelNode.java:1250)
   at org.netbeans.modules.viewmodel.TreeModelNode$TreeModelChildren.addNotify(TreeModelNode.java:1238)
   at org.openide.nodes.Children.callAddNotify(Children.java:568)
   at org.openide.nodes.EntrySupport$Default.getArray(EntrySupport.java:770)
   at org.openide.nodes.EntrySupport$Default.getNodes(EntrySupport.java:172)
   at org.openide.nodes.EntrySupport$Default.getNodes(EntrySupport.java:228)
   at org.openide.nodes.Children.getNodes(Children.java:462)
   at org.netbeans.modules.viewmodel.TreeModelNode$TreeModelChildren.destroyNodes(TreeModelNode.java:1527)
   at org.netbeans.modules.viewmodel.TreeModelNode$TreeModelChildren.destroyNodes(TreeModelNode.java:1527)
   at org.netbeans.modules.viewmodel.TreeModelNode$TreeModelChildren.destroyNodes(TreeModelNode.java:1527)
   at org.openide.nodes.EntrySupport$Default.notifyRemove(EntrySupport.java:692)
   at org.openide.nodes.EntrySupport$Default.updateRemove(EntrySupport.java:407)
   at org.openide.nodes.EntrySupport$Default.setEntries(EntrySupport.java:357)
   at org.openide.nodes.EntrySupport.setEntries(EntrySupport.java:102)
   at org.openide.nodes.Children$Keys$2.run(Children.java:1548)
   at org.openide.util.Mutex$1Exec.run(Mutex.java:1244)
   at org.openide.nodes.Children$ProjectManagerDeadlockDetector.execute(Children.java:1913)
   at org.openide.util.Mutex.postRequest(Mutex.java:1250)
   at org.openide.util.Mutex.postRequest(Mutex.java:1213)
   at org.openide.util.Mutex.postWriteRequest(Mutex.java:585)
   at org.openide.nodes.Children$Keys.applyKeys(Children.java:1557)
   at org.openide.nodes.Children$Keys.setKeys(Children.java:1538)
   at org.netbeans.modules.viewmodel.TreeModelNode$TreeModelChildren.applyChildren(TreeModelNode.java:1435)
   at org.netbeans.modules.viewmodel.TreeModelNode$TreeModelChildren.refreshLazyChildren(TreeModelNode.java:1395)
   at org.netbeans.modules.viewmodel.TreeModelNode$TreeModelChildren.refreshChildren(TreeModelNode.java:1250)
   at org.netbeans.modules.viewmodel.TreeModelHyperNode.refreshTheChildren(TreeModelHyperNode.java:110)
   at org.netbeans.modules.viewmodel.TreeModelNode$5.run(TreeModelNode.java:587)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:199)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:641)
   at java.awt.EventQueue.access$000(EventQueue.java:84)
   at java.awt.EventQueue$1.run(EventQueue.java:602)
   at java.awt.EventQueue$1.run(EventQueue.java:600)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:611)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:153)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
Caused: java.lang.reflect.InvocationTargetException
   at java.awt.EventQueue.invokeAndWait(EventQueue.java:1042)
   at javax.swing.SwingUtilities.invokeAndWait(SwingUtilities.java:1326)
   at org.netbeans.modules.viewmodel.TreeModelNode$5.run(TreeModelNode.java:570)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1424)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1973)