title: Jmeter plugin error for PerfMonCollector listener while running Performance Metrics Collector
body: <p>I am trying to run performance test using jmeter in non-gui mode to map CPU/Memory Utilization for the server machine. However i am experiencing an error while running the test in non-gui mode.</p>
  
  <pre><code>    Error in NonGUIDriver java.lang.IllegalArgumentException: Problem loading XML from:'/Users/vikasgupta/Downloads/apache-jmeter-5.2.1/bin/Check FreePlays.jmx'. 
  Cause:
  CannotResolveClassException: kg.apc.jmeter.perfmon.PerfMonCollector
  
   Detail:com.thoughtworks.xstream.converters.ConversionException: 
  ---- Debugging information ----
  cause-exception     : com.thoughtworks.xstream.converters.ConversionException
  cause-message       : 
  first-jmeter-class  : org.apache.jmeter.save.converters.HashTreeConverter.unmarshal(HashTreeConverter.java:67)
  class               : org.apache.jmeter.save.ScriptWrapper
  required-type       : org.apache.jorphan.collections.ListedHashTree
  converter-type      : org.apache.jmeter.save.ScriptWrapperConverter
  path                : /jmeterTestPlan/hashTree/hashTree/hashTree/kg.apc.jmeter.perfmon.PerfMonCollector
  line number         : 266
  version             : 5.0 r1840935
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/4pE4z.png" rel="nofollow noreferrer">PerfMon (Servers Performance Monitoring) plugin</a></p>
  
  <p><a href="https://i.stack.imgur.com/v5zA8.png" rel="nofollow noreferrer">CannotResolveClassException: kg.apc.jmeter.perfmon.PerfMonCollector</a></p>