It's from the fawn chastity event i think the glitch happen because my character is thick so i recommend turning it off in the forest park in the fairy queen place
If its just a case of a missing image you can make a quick fix yourself until its patched out.
Ive had to do it a few times in the past, just open the file dir. and copy a picture with a similar name and rename it to the missing ones, it will allow you to at least advance the story if that is what you want.