Sounds a lot like this issue, which seems to be caused by a corrupted NPC body somewhere in your world
There Is a workaround for it if you can go back to an old save and figure out where the offending "dead" body is - for details read this thread!
https://forums.larian.com/ubbthreads.php?ubb=showflat&Number=902423&nt=3&page=1
Last edited by MojoBeast; 30/09/23 11:21 PM.