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PluginsCMDWorker exception in Jmeter

I am new to jmeter. When I run my test with Graphs Generator plugin I get this exception.

ERROR o.a.j.JMeter: Uncaught exception: 
java.lang.NoClassDefFoundError: kg/apc/jmeter/PluginsCMDWorker
    at kg.apc.jmeter.listener.GraphsGeneratorListener.testEnded(GraphsGeneratorListener.java:146) ~[JMeterPlugins-Extras.jar:?]
    at kg.apc.jmeter.listener.GraphsGeneratorListener.testEnded(GraphsGeneratorListener.java:137) ~[JMeterPlugins-Extras.jar:?]
    at org.apache.jmeter.engine.StandardJMeterEngine.notifyTestListenersOfEnd(StandardJMeterEngine.java:227) ~[ApacheJMeter_core.jar:4.0 r1823414]
    at org.apache.jmeter.engine.StandardJMeterEngine.run(StandardJMeterEngine.java:495) ~[ApacheJMeter_core.jar:4.0 r1823414]
    at java.lang.Thread.run(Unknown Source) [?:?]
Caused by: java.lang.ClassNotFoundException: kg.apc.jmeter.PluginsCMDWorker
    at java.net.URLClassLoader.findClass(Unknown Source) ~[?:?]
    at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:?]
    at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:?]
    ... 5 more
2018-04-05 13:33:26,076 ERROR o.a.j.JMeter: Uncaught exception: 
java.lang.ClassCastException: java.desktop/javax.swing.text.AbstractDocument$DefaultDocumentEventUndoableWrapper cannot be cast to java.desktop/javax.swing.text.AbstractDocument$DefaultDocumentEvent
    at jsyntaxpane.CompoundUndoMan.undoableEditHappened(CompoundUndoMan.java:61) ~[jsyntaxpane-1.0.0.jar:1.0.0]
    at javax.swing.text.AbstractDocument.fireUndoableEditUpdate(Unknown Source) ~[?:?]
    at javax.swing.text.AbstractDocument.handleInsertString(Unknown Source) ~[?:?]
    at javax.swing.text.AbstractDocument.insertString(Unknown Source) ~[?:?]
    at javax.swing.text.PlainDocument.insertString(Unknown Source) ~[?:?]
    at javax.swing.text.DefaultEditorKit.read(Unknown Source) ~[?:?]
    at javax.swing.JEditorPane.setText(Unknown Source) ~[?:?]
    at org.apache.jmeter.visualizers.RenderAsText.showTextResponse(RenderAsText.java:36) ~[ApacheJMeter_components.jar:4.0 r1823414]
    at org.apache.jmeter.visualizers.RenderAsText.renderResult(RenderAsText.java:31) ~[ApacheJMeter_components.jar:4.0 r1823414]
    at org.apache.jmeter.visualizers.ViewResultsFullVisualizer.valueChanged(ViewResultsFullVisualizer.java:392) ~[ApacheJMeter_components.jar:4.0 r1823414]
    at org.apache.jmeter.visualizers.ViewResultsFullVisualizer.valueChanged(ViewResultsFullVisualizer.java:365) ~[ApacheJMeter_components.jar:4.0 r1823414]
    at javax.swing.JTree.fireValueChanged(Unknown Source) ~[?:?]
    at javax.swing.JTree$TreeSelectionRedirector.valueChanged(Unknown Source) ~[?:?]
    at javax.swing.tree.DefaultTreeSelectionModel.fireValueChanged(Unknown Source) ~[?:?]
    at javax.swing.tree.DefaultTreeSelectionModel.notifyPathChange(Unknown Source) ~[?:?]
    at javax.swing.tree.DefaultTreeSelectionModel.setSelectionPaths(Unknown Source) ~[?:?]
    at javax.swing.tree.DefaultTreeSelectionModel.setSelectionPath(Unknown Source) ~[?:?]
    at javax.swing.JTree.setSelectionPath(Unknown Source) ~[?:?]
    at javax.swing.plaf.basic.BasicTreeUI.selectPathForEvent(Unknown Source) ~[?:?]
    at javax.swing.plaf.basic.BasicTreeUI$Handler.handleSelection(Unknown Source) ~[?:?]
    at javax.swing.plaf.basic.BasicTreeUI$Handler.mousePressed(Unknown Source) ~[?:?]
    at java.awt.AWTEventMulticaster.mousePressed(Unknown Source) ~[?:?]
    at java.awt.Component.processMouseEvent(Unknown Source) ~[?:?]
    at javax.swing.JComponent.processMouseEvent(Unknown Source) ~[?:?]
    at java.awt.Component.processEvent(Unknown Source) ~[?:?]
    at java.awt.Container.processEvent(Unknown Source) ~[?:?]
    at java.awt.Component.dispatchEventImpl(Unknown Source) ~[?:?]
    at java.awt.Container.dispatchEventImpl(Unknown Source) ~[?:?]
    at java.awt.Component.dispatchEvent(Unknown Source) ~[?:?]
    at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)

Also, I added the Plugin Manager .jar file but when I click on Plugin Manager I get a Connection timed out error and it does not redirect me to the Plugin Window.

Solution

  • You need to install JMeterPluginsCMD Command Line Tool, the recommended way of installing it is using JMeter Plugins Manager

    JMeter Plugins Manager Command Line Tool

    If for some reason you cannot use the Plugins Manager you can always download jar from https://jmeter-plugins.org/?search=jpgc-cmd, drop it to "lib/ext" folder of your JMeter installation and restart JMeter to pick it up.