jmeter.gui.util.MenuFactory: Could not instantiate org.apache.jmeter.protocol.java.control.gui.JUnitTestSamplerGui java.lang.IncompatibleClassChangeError: Implementing class

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Could not instantiate org.apache.jmeter.protocol.java.control.gui.JUnitTestSamplerGui java.lang.IncompatibleClassChangeError: Implementing class
jmeter.gui.util.MenuFactory: Could not instantiate org.apache.jmeter.protocol.java.control.gui.JUnitTestSamplerGui java.lang.IncompatibleClassChangeError: Implementing class
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
at org.apache.jorphan.reflect.ClassFinder.isChildOf(ClassFinder.java:377)
at org.apache.jorphan.reflect.ClassFinder.access$000(ClassFinder.java:47)
at org.apache.jorphan.reflect.ClassFinder$ExtendsClassFilter.accept(ClassFinder.java:92)
at org.apache.jorphan.reflect.ClassFinder.findClassesInOnePath(ClassFinder.java:441)
at org.apache.jorphan.reflect.ClassFinder.findClasses(ClassFinder.java:289)
at org.apache.jorphan.reflect.ClassFinder.findClassesThatExtend(ClassFinder.java:264)
at org.apache.jorphan.reflect.ClassFinder.findClassesThatExtend(ClassFinder.java:196)
at org.apache.jorphan.reflect.ClassFinder.findClassesThatExtend(ClassFinder.java:178)
at org.apache.jmeter.protocol.java.control.gui.JUnitTestSamplerGui.setupClasslist(JUnitTestSamplerGui.java:181)
at org.apache.jmeter.protocol.java.control.gui.JUnitTestSamplerGui.createClassPanel(JUnitTestSamplerGui.java:212)
at org.apache.jmeter.protocol.java.control.gui.JUnitTestSamplerGui.init(JUnitTestSamplerGui.java:167)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at java.lang.Class.newInstance(Class.java:442)
at org.apache.jmeter.gui.util.MenuFactory.initializeMenus(MenuFactory.java:492)
at org.apache.jmeter.gui.util.MenuFactory.(MenuFactory.java:160)
at org.apache.jmeter.control.gui.TestPlanGui.createPopupMenu(TestPlanGui.java:93)
at org.apache.jmeter.gui.tree.JMeterTreeNode.createPopupMenu(JMeterTreeNode.java:156)
at org.apache.jmeter.gui.action.EditCommand.doAction(EditCommand.java:47)
at org.apache.jmeter.gui.action.ActionRouter.performAction(ActionRouter.java:80)
at org.apache.jmeter.gui.action.ActionRouter.access$000(ActionRouter.java:40)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:756)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:726)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)

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