The logs would suggest that the Database service got shut down. Are you on a distributed system? You will need to restart the Database Service.
I suggest you try to restart FME Server and see if that solves the problem.
Thank you, after restarting, I still can't load the jobs page, and the developer page reports an error message such as an attachment, I don't know if I need to configure it in the domain name environment, and how to configure it。