I’ve had some pop-up “last exception” notifications at random times from MC command Center, but that’s honestly normal at this point. Do you think there’s a mod conflicting with wonderful whims?
I've experienced this as well. and although a nuisance, the constant pop-ups, at the start of the game. It hasn't affected my gameplay as far as I know. I think that it is caused by a "out dated" mod that depends on WonderfulWhims causing it. Like Husk said, test with only WonderfulWhims enabled. If that works add dependent mods until you find the culprit.