OK, so just to confirm … the dates and times in that log file are local times for where you are and you booted at 7:41pm on Saturday evening, left it running, and at 3:57pm on Sunday afternoon (or thereabouts) it locked up?
If that’s right, let’s get back to assessing what state the computer is in when it locks up.
- can you ping it?
- can you SSH in?
However you might not normally be able to SSH in anyway. So you would need to confirm that you can SSH in when it is running normally and if not then you need to get SSH going first.