Getting last exception report after romantic interactions

As the title says, I'm getting a last exception report whenever my sims complete a romantic interaction. They are also unable to wohoo and try for a baby due to this. It’s only happening for this couple in particular- all of my other couples are unaffected by this.

I use mods and my mods are up to date with the latest patch. Better exceptions has also showed that none of my mods are causing this issue. I've repaired my game more than once and have cleared the cache more than once. But I still can't figure out what the problem is here

I'm unable to paste the last exception report here since it's long and the character limit for messages on here is 60,000. But I hope these pictures from both the better exceptions report and the last exception report can help out with trying to figure out what the problem here is

I'm not sure if this is a game bug that has randomly appeared and I have to wait for ea to fix it or something else entirely. Whatever the issue is, I hope someone can help me figure it out- thank you to anyone who sees this!