Whenever I try to open up my main save file, I get the exception:
"SteamCloud could not find or open rep_gamestate1.dat. No Game State detected."

I have no clue what could be causing this. I tried to delete the cloud save, I tried using an older save backup from before the error started happening, nothing works.

Here's the full log.txt file if anyone wants to take a look.
https://pastebin.com/tPMAaYfn