Our server (Java, 1.16.5) has currently 37 mods and we've been playing for around a month, a little bit more probably. Yesterday we were holding an event, and there was around 12-14 people inside, which is a kinda high number cuz we're usually just 7-8 people playing at a time. Just as we were to start the event, the server crashed and we were kicked out. We haven't been able to join again ever since. Here's a couple pics of the error screen we get when trying to join.
We'd been playing for about 4 hours before this happened, and the server is usually active around 8-12 hours per day. The server has always been kind of laggy and it kicks us randomly from time to time but we were always able to join again a few seconds later.
Some of our bases are 2k-10k blocks apart and away from spawn point, if that has anything to do with the issue.
Here's an screen capture of our mods folder.
We would be very grateful is anyone could help us solve this. We've put so much effort into this world it's just a gigant bummer to think it is all going to go to waste if we can't fix this.
Thank you 