title: Unable to open jmx file in Jmeter 5.4.2
body: <p>When i try to open the jmx file in jmeter5.4.2 I get the following error.</p>
  <pre><code>java.lang.IllegalArgumentException: Problem loading XML from:'D:\Jmeter_Script\CloudBLM_v2\Jmeter\loadscript\CloudBLM_loadscript.jmx'. 
  Cause:
  CannotResolveClassException: com.tag.jmeter.ext.config.PropertyReader
  
   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:66)
  class               : org.apache.jmeter.save.ScriptWrapper
  required-type       : org.apache.jmeter.save.ScriptWrapper
  converter-type      : org.apache.jmeter.save.ScriptWrapperConverter
  path                : /jmeterTestPlan/hashTree/hashTree/com.tag.jmeter.ext.config.PropertyReader
  line number         : 70
  version             : 5.4.2
  </code></pre>