org.netbeans.api.debugger.jpda.InvalidExpressionException: No current context
   at org.netbeans.modules.debugger.jpda.JPDADebuggerImpl.invokeMethod(JPDADebuggerImpl.java:1047)
   at org.netbeans.modules.debugger.jpda.JPDADebuggerImpl.invokeMethod(JPDADebuggerImpl.java:995)
   at org.netbeans.modules.debugger.jpda.models.AbstractObjectVariable.getToStringValue(AbstractObjectVariable.java:477)
   at org.netbeans.modules.debugger.jpda.models.AbstractObjectVariable.getToStringValue(AbstractObjectVariable.java:426)
Caused: java.lang.reflect.InvocationTargetException
   at sun.reflect.GeneratedMethodAccessor455.invoke(GeneratedMethodAccessor455.java:0)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:601)
   at org.netbeans.modules.debugger.jpda.ui.models.VariablesNodeModel.getLimitedToString(VariablesNodeModel.java:385)
   at org.netbeans.modules.debugger.jpda.ui.models.VariablesNodeModel.getShortDescriptionSynch(VariablesNodeModel.java:321)
   at org.netbeans.modules.debugger.jpda.ui.models.VariablesNodeModel$1.run(VariablesNodeModel.java:301)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1432)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2044)