I had a server with me and my friends and we recently updated it from 1.18 to 1.19. It was working just fine for a while until I went to trade with a villager and my game crashed. From what it seems certain villagers are just bugged and aren't able to be interacted with.

This may just be a problem related to it being on a server rather than a realm or world. But it'd be nice if you could look into it.