jmeter missing.class com.thoughtworks.xstream.converters.ConversionException

Question

I was running my script and it hanged and I had to force close. Now this error appears:

Answer 1

• Download "Plugins-manager.jar" from https://jmeter-plugins.org/downloads/all/
• Put downloaded .jar into JMETER_INSTALLED_DIRECTORY/lib/ext directory
• Restart jmeter.

Open the script, it will show a download missing component dialog. Download missing component.

Hope this will help

Answer 2

I installed Jmeter on Ubuntu Linux using 'apt-get install jmeter', which it seems installs a very old version of Jmeter.
Old version => 2.x
I downloaded the latest version using curl and installed it and the problem disappeared.
New version => 5.x.