Help me find a movie.I added the movie to my bookmarks and wanted to watch it, but then everything was deleted. I don't remember anything except the concept of the movie.

Help me find a movie. I added the movie to my bookmarks and wanted to watch it, but then everything was deleted. I don`t remember anything except the concept of the movie. A movie about a group of friends or scriptwriters who come up with a movie. And the plot of the movie changes as soon as they come up with something new. (not exactly, but it seems like the movie takes place in a room. I also only remember one moment where the cop knocks on the door of this house and the scriptwriters say, what if they have a dead body inside the house and it appears there.)