I did a fresh install on my RPi4 of LE 12.0.0 recently and since then it has been hanging and crashing very frequently, roughly two or three times a day on average but sometimes even as frequently as once an hour. I'm not able to connect to it via SSH when it is in this state and I'm forced to do a hard reboot by disconnecting and reattaching power. This happens even while the Pi is sitting idle, and I have noticed that it happens when Radarr or Sonarr attempts to run a library update after a new file is downloaded.
I tried going through the logs but I don't see anything jumping out at me as to why this could be happening. I've attached logs from this morning, a kodi.old.log from after I had to reboot the Pi and then a kodi.log from after I noticed that it had hung again and I had to reboot it once again.