Sorry, I thought I added a screenshot. But it isn't in the post. The game doesn't run after the last patch, and there's a window that says
"An error occurred while updating Book of Korvald Demo (missing executable):
C:\Program Files(x86)\Steam\steamapps\common\Book of Korvald Demo\Book of Korvald.exe
See the Steam support site for more information"
I tried reinstalling it, validating installation, etc. but I get the same