I have been working on an Iron Golem farm and it doesn't work. I have created this farm before, and it has worked. I have 10 villagers, 24 doors that have access to the sun. What am I doing wrong? (See video link)
It looks to me like half the doors have no daylight exposure at all. They have water or blocks covering sky access on both sides (water is not a fully transparent block, it attenuates light, so it counts as a roof block). Doors need more full sky exposure on one side within 5 blocks (not counting the block the door is placed on) to be validated as a house.