Is there any suggested way to debug when the GUI is not popping up?

[NJUleo]

OS: Ubuntu 22.04.1
Windows system: X11

I used to use this on Ubuntu 20, and it worked perfectly until I recently upgraded my OS to Ubuntu 22, and after a couple of days, the GUI won't pop up after I restart the container.

I tried sudo x11 +, didn't work.

Is there any way that I can somehow get some information about the problem? Like peeking the log or error message? Where can I see them?

Thank you so much!