Issue Game Error Crash on End of Day - Can't pinpoint cause

[Aazlor]

SMAPI log parser - SMAPI.io

I have no idea what's causing this, nor what mod may be at fault. The game was working just fine and all of a sudden both my and my wife's files (separate games on separate computers) both started getting this error message. Everything has been stable for weeks. I then tried update to the latest versions of all my mods and I'm still getting the issue. Please help!

 

[Mizzion]

Looks like the Multiple Spouses mod is acting up. According to the compatibility list, that mod is no longer maintained. It recommends that you use Free Love which is made by the same person.