System Stops after bench restart!

I have a strange issue after moving to STC servers.
When I run sudo supervisorctl restart all or bench restart

The server stops and keeps showing this page

and after a moment and after sudo reboot the server, it works !!

I am on v11
If anyone faces the same issue please advise!!

P.S. The system was working fine without any issues on the previous own servers!!


this is after bench restart