I have a Ubuntu server that randomly crashes. I dont know what too look for in logs. But I google and found syslog, it says nothing at the time of crashes.

Yesterday I finnaly hooked up a screen and saw errors at the crashes. But I dont understand them at all. Do they make any sense to you?

Dropbox photos
https://www.dropbox.com/sh/psjlyl4em..._kp0aGb_a?dl=0

The server is an upgraded from some ubuntu 14 release, and is now on 18.04.3.
It has been subject to many test projects, so it most likely have alot of extra packages. So a reinstall might be in order but before that I want to know:

Is it a hardware problem?
If not hardware problem, Can the current install be fixed? Is it worth it?
Should I just reinstall?