Thank you for confirming. Is there a way you could upload your save file somewhere and share it with me here?
In the meantime, when you get that error, is there an option to "ignore" at the bottom? Does that allow you to continue or does that crash the game?
I guess this problem solved itself now.
After clicking "ignore" i got the message, that the save is from an older version and that its been updated. Now i dont get errors anymore.
But just in case, here is the save:
https://mega.nz/file/8WADACoK#SmVRbtMpM5FIePSzjXLPPF-B0iG6b2v3q_HaY0BJKUM