Pretty much as the title says. I have received these crashes with fewer players and before the recent update, but these are the most recent I can provide.
Whenever I get these kinds of crashes, they are usually caused by some kind of "AwardTemplate", which to my understanding is some kind of event listener that is trying to respond to an action carried out by a player that has joined after the first 4 have joined, but receives an invalid pointer somewhere and causes the server to coredump.
Are there any known fixes or remedies for these crashes?