Same error as several dozen times before.
There just isn't any maintenance on the server until it crashes and this time the crash was way overdue, because nearly all functions were either heavily lagging or not working at all.

If they do the same they did the previous times, it will take a day or so until they notice the server crashed and from then on another few hours until they have cleaned out the data and restarted the server.
Hopefully after that for a week or two their server will work smooth again, before these problems start all over again.