Last night, all the villagers disappeared from the village

I have set up a server for some friends and I. Last night, someone went to the village and all villagers were gone.
After searching a bit, there were a single zombie and a single skeleton in the village. Is it possible that they killed everyone?
- Official minecraft server 1.8, 0 mods/plugins
- Fences all around the village
I already saw This question but I don't have any mod.
Best Answer
Possibly they despawned. The same thing happened to me: no villagers and a zombie in the well with a door in its hand.
Think it was daylight. And,yes,it is possible for the zombie to kill everyone.(Skeletons don't attack villagers).
This thing could have happened especially if the villagers entered in a few houses or a single house. The zombie could have broken the door and blocked the villagers while getting out.
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Why are the villagers in my village disappearing?
There are chances that your villager will despawn if it moves more than 128 blocks away from your house or world in your gameplay. There could be another way by which your villager will despawn in Minecraft world. If your villager is in mating mode and you are not breeding them, then your villager will despawn.How do you get villagers back in a village?
To cure a Zombie villager, players must throw a Potion of Weakness at them and then give them a Golden Apple. More specifically, they must be under the Weakness effect and then be given a golden apple. After they're cured, the player can then transport the villager to the village of their choice.Why did all of my animals and villagers disappear in Minecraft?
However, it seems that Minecraft Bedrock players are suffering bugs that cause some animals, villagers, and armor stands disappearing. The bug would be especially noticeable on the Xbox and Nintendo Switch versions.Do normal villagers Despawn?
Except villagers. They are exempt from despawn timers and, barring any bugs (looking at you, Bedrock Edition!), should not despawn on their own. They can, however, be annoyingly hard to keep alive until you get the hang of it.Have the Villagers Left Me!? | Did They Vanish? | Let's Play Minecraft #5
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Images: Erik Mclean, Ollie Craig, Ollie Craig, Ollie Craig