Failed: Importing test library

Hello Guys,
I am trying to run my test and I face this error.

I try many solutions but nothing works for the moment.

This point to the right file but importing the test library is still failing.

This is the content of the plugin

I’m surprised there is not more of Stacktrace there … might try increasing the loglevel toTRACE to see if you get more information. The one thing I would try, just as a quick sanity test, is change the name of the class from MyPlugin to CustomBrowserManager. At the moment I am not frequently making python libraries so everytime I do I always seem to trip over the requirements for class name, module name, library name.

Thank you @EdManlove Rename the plugin from MyPlugin to CustomBrowserManager fixed the issue.
Happy new year