[MC-133397] Error "Skipping entity with id ..." for the new entity's ID when upgrading

When the ID of the iron_golem was changed, this error appeared :

[01:19:13] [Client thread/WARN]: Skipping Entity with id minecraft:villager_golem
[01:19:13] [Client thread/WARN]: Skipping Entity with id minecraft:villager_golem
[01:19:13] [Client thread/WARN]: Skipping Entity with id minecraft:villager_golem
[01:19:13] [Client thread/WARN]: Skipping Entity with id minecraft:villager_golem
[01:19:13] [Client thread/WARN]: Skipping Entity with id minecraft:villager_golem
[01:19:13] [Client thread/WARN]: Skipping Entity with id minecraft:villager_golem
[01:19:13] [Client thread/WARN]: Skipping Entity with id minecraft:villager_golem
[01:19:13] [Client thread/WARN]: Skipping Entity with id minecraft:villager_golem
[01:19:13] [Client thread/WARN]: Skipping Entity with id minecraft:villager_golem
[01:19:13] [Client thread/WARN]: Skipping Entity with id minecraft:villager_golem
[01:19:13] [Client thread/WARN]: Skipping Entity with id minecraft:villager_golem
[01:19:13] [Client thread/WARN]: Skipping Entity with id minecraft:villager_golem
[01:19:14] [Client thread/WARN]: Skipping Entity with id minecraft:villager_golem
[01:19:14] [Client thread/WARN]: Skipping Entity with id minecraft:villager_golem
[01:19:14] [Client thread/WARN]: Skipping Entity with id minecraft:villager_golem
[01:19:14] [Client thread/WARN]: Skipping Entity with id minecraft:villager_golem
[01:19:14] [Client thread/WARN]: Skipping Entity with id minecraft:villager_golem
[01:19:14] [Client thread/WARN]: Skipping Entity with id minecraft:villager_golem
[01:19:14] [Client thread/WARN]: Skipping Entity with id minecraft:villager_golem

1 time or more every tick...