is it in one special room?

nah, its all over the place. theres a room which i think is meant to be a dining hall, and where i assume the tables are theres nothing but errors.

amongst others. the truck bit has a lot of errors on the trucks. almost a third of the rooms have some kind of error.

there is something wrong on your end only because i know there is no missing content
try verifying the game files or redownload the map

oh well. thanks for the help. and awesome map btw, i love the music choices and memes