Might be something you don't want to/can't fix but i figured just throwing this in here if there's something you know about it. The packpuppy talent in the doggy talent mod some how conflicts with shrink and crashes server when the player with the dog joins.

We're just gonna remove doggy talents mods for now cause shrink is too fun to give up
crash-2021-03-06_23.01.08-server.txt if you don't want to save the .txt-> https://pastebin.com/ftL3GvQm