Can't save my game

I recently installed the new expansion pack, Adventure Awaits. I use mods/cc for my game to make things more interesting. After every update and new pack installation, I always go through my mods/cc to make sure if there are any issues. Up until yesterday, everything was working fine. Then, I was playing the game yesterday and I discovered that I could not save my game. I tried several times yesterday and again today to save my game, but I keep getting the same error code. I've attached a picture of the error code for your reference. I would like to get back to playing, but I can't do so if I can't save my game. Please help me fix this problem!