During evaluation of 'toString()'
Caused: java.lang.NullPointerException
   at com.sun.source.util.TreePath.<init>(TreePath.java:112)
   at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:70)
   at com.sun.source.util.TreeScanner.scan(TreeScanner.java:106)
   at com.sun.source.util.TreeScanner.visitBlock(TreeScanner.java:249)
   at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:1002)
   at org.netbeans.modules.debugger.jpda.projects.PreferredCCParser.interpretOrCompileCode(PreferredCCParser.java:522)
   at org.netbeans.modules.debugger.jpda.projects.EditorContextSupport.interpretOrCompileCode(EditorContextSupport.java:1452)
   at org.netbeans.modules.debugger.jpda.projectsui.EditorContextImpl.interpretOrCompileCode(EditorContextImpl.java:860)
   at sun.reflect.GeneratedMethodAccessor387.invoke(GeneratedMethodAccessor387.java:0)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:498)
   at org.netbeans.modules.debugger.jpda.EditorContextBridge.interpretOrCompileCode(EditorContextBridge.java:165)
   at org.netbeans.modules.debugger.jpda.expr.TreeEvaluator.evaluate(TreeEvaluator.java:199)
   at org.netbeans.modules.debugger.jpda.JavaEvaluator.evaluateIn(JavaEvaluator.java:162)
   at org.netbeans.modules.debugger.jpda.JavaEvaluator.evaluate(JavaEvaluator.java:107)
   at org.netbeans.modules.debugger.jpda.expr.EvaluatorExpression$AssociatedExpression.evaluate(EvaluatorExpression.java:90)
   at org.netbeans.modules.debugger.jpda.expr.EvaluatorExpression.evaluate(EvaluatorExpression.java:73)
   at org.netbeans.modules.debugger.jpda.JPDADebuggerImpl.evaluateGeneric(JPDADebuggerImpl.java:979)
   at org.netbeans.modules.debugger.jpda.JPDADebuggerImpl.evaluate(JPDADebuggerImpl.java:373)
   at org.netbeans.modules.debugger.jpda.JPDADebuggerImpl.evaluate(JPDADebuggerImpl.java:349)
   at org.netbeans.modules.debugger.jpda.models.AbstractObjectVariable.evaluate(AbstractObjectVariable.java:689)
   at sun.reflect.GeneratedMethodAccessor382.invoke(GeneratedMethodAccessor382.java:0)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:498)
   at org.netbeans.modules.debugger.jpda.ui.models.VariablesFormatterFilter.getValueAt(VariablesFormatterFilter.java:490)
   at org.netbeans.modules.debugger.jpda.ui.models.VariablesFormatterFilter.getValueAt(VariablesFormatterFilter.java:450)
   at org.netbeans.modules.debugger.jpda.ui.models.VariablesTreeModelFilter.getValueAt(VariablesTreeModelFilter.java:557)
   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$CompoundTableModel.getValueAt(Models.java:1466)
   at org.netbeans.modules.debugger.jpda.ui.models.BoldVariablesTableModelFilter.getHTMLValueAt(BoldVariablesTableModelFilter.java:103)
   at org.netbeans.spi.viewmodel.Models$CompoundTableModel.getHTMLValueAt(Models.java:1482)
   at org.netbeans.spi.viewmodel.Models$CompoundModel.getHTMLValueAt(Models.java:4901)
   at org.netbeans.modules.viewmodel.TreeModelNode$MyProperty.run(TreeModelNode.java:1920)
   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)