com.sun.jdi.InvalidStackFrameException: Thread has been resumed
        at com.sun.tools.jdi.StackFrameImpl.validateStackFrame(StackFrameImpl.java:62)
        at com.sun.tools.jdi.StackFrameImpl.thread(StackFrameImpl.java:80)
Caused: org.netbeans.api.debugger.jpda.InvalidExpressionException: Thread has been resumed
        at org.netbeans.modules.debugger.jpda.expr.EvaluatorVisitor.invokeMethod(EvaluatorVisitor.java:2867)
        at org.netbeans.modules.debugger.jpda.expr.EvaluatorVisitor.visitMethodInvocation(EvaluatorVisitor.java:399)
        at org.netbeans.modules.debugger.jpda.expr.EvaluatorVisitor.visitMethodInvocation(EvaluatorVisitor.java:178)
        at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1311)
        at org.netbeans.modules.debugger.jpda.expr.EvaluatorVisitor.visitExpressionStatement(EvaluatorVisitor.java:1345)
        at org.netbeans.modules.debugger.jpda.expr.EvaluatorVisitor.visitExpressionStatement(EvaluatorVisitor.java:178)
        at com.sun.tools.javac.tree.JCTree$JCExpressionStatement.accept(JCTree.java:1151)
        at org.netbeans.modules.debugger.jpda.expr.EvaluatorVisitor.visitBlock(EvaluatorVisitor.java:1246)
        at org.netbeans.modules.debugger.jpda.expr.EvaluatorVisitor.visitBlock(EvaluatorVisitor.java:178)
        at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:777)
        at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:49)
        at org.netbeans.modules.debugger.jpda.expr.EvaluatorVisitor.scan(EvaluatorVisitor.java:214)
        at org.netbeans.modules.debugger.jpda.expr.EvaluatorVisitor.scan(EvaluatorVisitor.java:178)
        at org.netbeans.modules.debugger.jpda.projects.EditorContextImpl.parseExpression(EditorContextImpl.java:1546)
        at sun.reflect.GeneratedMethodAccessor1596.invoke(GeneratedMethodAccessor1596.java:0)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.netbeans.modules.debugger.jpda.EditorContextBridge.parseExpression(EditorContextBridge.java:126)
        at org.netbeans.modules.debugger.jpda.expr.TreeEvaluator.evaluate(TreeEvaluator.java:163)
        at org.netbeans.modules.debugger.jpda.JPDADebuggerImpl.evaluateIn(JPDADebuggerImpl.java:936)
        at org.netbeans.modules.debugger.jpda.JPDADebuggerImpl.evaluateIn(JPDADebuggerImpl.java:801)
        at org.netbeans.modules.debugger.jpda.JPDADebuggerImpl.evaluateIn(JPDADebuggerImpl.java:762)
        at org.netbeans.modules.debugger.jpda.JPDADebuggerImpl.evaluate(JPDADebuggerImpl.java:393)
        at org.netbeans.modules.debugger.jpda.JPDADebuggerImpl.evaluate(JPDADebuggerImpl.java:369)
        at org.netbeans.modules.debugger.jpda.models.AbstractObjectVariable.evaluate(AbstractObjectVariable.java:521)
Caused: java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethodAccessorImpl.java:0)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.netbeans.modules.debugger.jpda.ui.models.VariablesFormatterFilter.getChildren(VariablesFormatterFilter.java:167)
        at org.netbeans.modules.debugger.jpda.ui.models.VariablesFormatterFilter.getChildren(VariablesFormatterFilter.java:168)
        at org.netbeans.modules.debugger.jpda.ui.models.VariablesTreeModelFilter.getChildren(VariablesTreeModelFilter.java:205)
        at org.netbeans.spi.viewmodel.Models$CompoundTreeModel.getChildren(Models.java:699)
        at org.netbeans.spi.viewmodel.Models$CompoundModel.getChildren(Models.java:3145)
        at org.netbeans.modules.viewmodel.TreeModelNode$TreeModelChildren.evaluateLazily(TreeModelNode.java:805)
        at org.netbeans.modules.viewmodel.TreeModelNode$LazyEvaluator.run(TreeModelNode.java:1253)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:573)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1005)