Oh! That's a new one for me. I've had waiters just not deliver anything, and to a critic worse luck. I'd save your game and quit out then delete the localthumbcache.package file from your the sims 4 folder and also check that all the items in your 'cache' folder have been deleted (this is just thumbnails etc from using the Gallery and are not needed so completely safe to delete and in fact should be deleted regularly if you use the Gallery a lot).