I can't speak about this mod specifically, but I have experienced this when two mods I had were overlapping the same space. I would save the game, disable the mod, open the game back up and see if anything is there if so, and not a vanilla asset, then that's likely your problem. If not then save the game again and run FallrimTools read the instructions and clean the scripts and undefined objects exactly as the instructions indicate. It's made really easy, and it does backup your save so don't worry too much. After you clean it with fallrimtools re-enable the mod and load the new save that Fallrimtools made. Very likely everything will work as expected afterwards.