Villagers not picking up food or breeding

My villagers aren't picking up food or breeding at all. Not even my farmer.The farmer is not replanting or destroying any carrots. He isn't throwing food to the other villagers either. I've built ImpulseSV's villager breeder (https://www.youtube.com/watch?v=VTseLpa9Iyc&t=289s) here are some pictures of the farm below