Hello WTFormula
I tried a little more and managed to get into the house without Chrash.
However, the save also looks a little strange to me.
So I can not guarantee whether the error occurs again at a later point.
But I tried it with a test mod of mine, so I put a part of your inventory into the "safe chest".
I also cured your current disease.
We have noticed that the game always crashes when Jespar, for unknown reasons, does not go into the castle in front of me, but simply stops on the way.
Attached are 2 saves inside the house (just ignore the missing mod)
Good Luck