org.netbeans.api.debugger.jpda.InvalidExpressionException: No current context
        at org.netbeans.modules.debugger.jpda.JPDADebuggerImpl.invokeMethod(JPDADebuggerImpl.java:915)
        at org.netbeans.modules.debugger.jpda.JPDADebuggerImpl.invokeMethod(JPDADebuggerImpl.java:903)
        at org.netbeans.modules.debugger.jpda.models.AbstractObjectVariable.invokeMethod(AbstractObjectVariable.java:432)
        at org.netbeans.modules.debugger.jpda.models.AbstractObjectVariable.invokeMethod(AbstractObjectVariable.java:373)
        at org.netbeans.modules.debugger.jpda.ui.BreakpointOutput.substitute(BreakpointOutput.java:315)
        at org.netbeans.modules.debugger.jpda.ui.BreakpointOutput.breakpointReached(BreakpointOutput.java:147)
        at org.netbeans.api.debugger.jpda.JPDABreakpoint.fireJPDABreakpointChange(JPDABreakpoint.java:249)
        at org.netbeans.api.debugger.jpda.JPDADebugger.fireBreakpointEvent(JPDADebugger.java:424)
        at org.netbeans.modules.debugger.jpda.JPDADebuggerImpl.fireBreakpointEvent(JPDADebuggerImpl.java:519)
        at org.netbeans.modules.debugger.jpda.breakpoints.BreakpointImpl.perform(BreakpointImpl.java:378)
        at org.netbeans.modules.debugger.jpda.breakpoints.ExceptionBreakpointImpl.exec(ExceptionBreakpointImpl.java:130)
        at org.netbeans.modules.debugger.jpda.util.Operator$1.run(Operator.java:297)
        at java.lang.Thread.run(Thread.java:619)