I ended up doubling the amount of RAM in the server as it was cheap, but I'm still getting the error and it's causing the server to become unavailable every night now around 4AM. I have removed some dockers and turned off everything I don't see as mission critical. I think this might have started happening around when I updated to 6.12.4.
Started getting this issue raised in Fix Common Problems, and my server keeps becoming unreachable. If I IPMI in, it shows the normal login on the command line while its unresponsive but cant get to the web ui or anything running on it.
hulk-diagnostics-20231003-1458.zip