java.lang.NullPointerException
   at org.netbeans.modules.debugger.jpda.models.JPDAClassTypeImpl.invokeMethod(JPDAClassTypeImpl.java:322)
   at org.netbeans.modules.debugger.jpda.models.JPDAClassTypeImpl.invokeMethod(JPDAClassTypeImpl.java:269)
   at org.netbeans.modules.debugger.jpda.truffle.vars.TruffleSlotVariable.getValue(TruffleSlotVariable.java:115)
   at org.netbeans.modules.debugger.jpda.truffle.vars.models.TruffleVariablesTableModel.getValueAt(TruffleVariablesTableModel.java:107)
   at org.netbeans.spi.viewmodel.Models$CompoundTableModel.getValueAt(Models.java:1464)
   at org.netbeans.modules.debugger.jpda.ui.models.NumericDisplayFilter.getValueAt(NumericDisplayFilter.java:132)
   at org.netbeans.spi.viewmodel.Models$CompoundTableModel.getValueAt(Models.java:1464)
   at org.netbeans.modules.debugger.jpda.ui.models.VariablesTreeModelFilter.getValueAt(VariablesTreeModelFilter.java:555)
   at org.netbeans.spi.viewmodel.Models$CompoundTableModel.getValueAt(Models.java:1464)
   at org.netbeans.modules.debugger.jpda.ui.models.PendingActionsFilter.getValueAt(PendingActionsFilter.java:131)
   at org.netbeans.spi.viewmodel.Models$CompoundTableModel.getValueAt(Models.java:1464)
   at org.netbeans.spi.viewmodel.Models$CompoundTableModel.getValueAt(Models.java:1466)
   at org.netbeans.spi.viewmodel.Models$CompoundTableModel.getValueAt(Models.java:1466)
   at org.netbeans.spi.viewmodel.Models$CompoundModel.getValueAt(Models.java:4591)
   at org.netbeans.modules.viewmodel.TreeModelNode$MyProperty.run(TreeModelNode.java:1916)
   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)