If you move the sponge mod Bukkit map to the forge mod Bukkit map,
(missing minecraft entities sponge human)
If you ignore it and run it
I was wearing protective 4444 armor, but I was killed by a magma slime in 2-3 hits.
The expectation is that the user entity is either removed or not recognized, so it ignores the armor.
Can you please help?

do you use forge or spigot/bukkit, or what are you talking about?

[21:08:33] [Server thread/INFO]: Injecting existing registry data into this server instance
[21:08:33] [Server thread/INFO]: Registry EntityEntry: Found a missing id from the world sponge:human
[21:08:33] [Server thread/ERROR]: Unidentified mapping from registry minecraft:entities
[21:08:33] [Server thread/ERROR]:     sponge:human: 75
[21:08:33] [Server thread/WARN]: Forge Mod Loader detected missing registry entries.

There are 1 missing entries in this save.
If you continue the missing entries will get removed.
A world backup will be automatically created in your saves directory.

Missing minecraft:entities:
    sponge:human

2 minutes ago, diesieben07 said:

마인 크래프트의 어떤 버전을 사용하고 있습니까?

is 1.12.2

46 minutes ago, Luis_ST said:

위조 나 spigot / bukkit을 사용합니까, 또는 당신은 무엇에 대해 얘기하고 있습니까?

At first, I put a sponge in the forge and used it
I'm trying to change to Cat Server, but it shows up in the console below