Can't train with build no more

Hello, I was able to train from unity or built executable, but now I can only from unity.
My command line is something like: mlagents-learn brain.yaml --run-id try0 --num-env 10 --env "C:\Programmation\Project\builds\project.exe" --base-port 5005
And I’m using the same yaml.

Between the moment it worked and now I changed the target platform to linux dedicated server, built, switched to android, built and switched back to windows. I also removed VisualScripting package to remove a warning, but everything work in unity so I don’t see what to do.
When I run my command the exe launch and does what it usually does when not starting mlagents-learn before, and stops after a while with the classical timeout message.

Thanks in advance for any help.

I just see a warning :

Script attached to 'AcademyFixedUpdateStepper' in scene 'Assets/Scenes/SampleScene.unity' is missing or no valid script is attached.
UnityEngine.GUIUtility:ProcessEvent (int,intptr,bool&)

I will try to reinstall the mlagents package

Reinstalling didn’t correct the problem… nor removed the warning