Nvidia x server settings displays only two options

My issue is similiar to this topic

However sudo prime-select nvidia didn’t resolve the problem

I need this app to work in order to run rosbot simulation in webots
I attach bug report file
nvidia-bug-report.zip (305.3 KB)
Sorry if my question is stupid but i am new to linux systems and thanks for help in advance

You need to reboot after prime-select.

Sorry for the problem i didn’t think about it, of course it works now, thank you for quick answer