Map Crash

I don't know wtf is going on when I want to create a new map when it's go to #100 it just crash and when I log back in and the map turn to #0. When I hold it, it just crash. Not the server crash, I disconnected by that glitch. I can't s look at maps anymore. That's so weird.

When I disconnected it said io.netty.util.concurrent.SingleThreadEventExecutor$4.r

Essentials and skin restorer

Quote from coolgamerslush

server version?

Oh yea, I have ViaVersion and ViaBackward. My server is using Paper/Bukkit 1.17

I used 1.16.5 to play on my server, but 1.17 players have this issue too. And skulls doesn't work too, I tried to take my skull it become Alex or Steve's Skull. When I place down it's normal. When I wear it the head changed to Alex or Steve head, that is so weird.

Now the skull is normal, but maps still doesn't work.

Ok wth, maps files are messed up. When i created #106 map it is between #105 and #11.

The file look like this.