How can I interpret the last exception file?

Hello @rosemow, it only happened once, but I do not know if it would happen repeatedly because I closed the game right after the message appeared, in case my game failed or something like that. I don't know if the problem could be some custom content (I don't think it that could be that because the household I was playing with didn't have any cc, maybe something with the pets?)
also sorry for my english, I hope you can understand what I'm saying