Do please let me know about other bot crashes:

Any of those work. I'm locking this thread as it's meant to be specific to the Sep-20 incident.

The bots were stuck in a shutdown deadlock. A system exit call triggers the shutdown hook, and if that also invokes system exit then the system deadlocks. This could be triggered through the "admin shutdown" of a running game.

This update would fix the situation:
https://github.com/triplea-game/triplea/pull/15017

That update should roll out to bots in between games (there's an automatic restart between games, the bots have pulled the latest code version, they'll activate the new version on the next game restart)

@LaFayette

Hi
looks as if London Toronto and Cali all down a bot. 10 pm CST 9/25

@Cernel thanks, that issue is closed now.