Connection lost in Minecraft fabric 1.21

[xuehuyue]

Using this mod, if the player is a game administrator, the connection will be disconnected.

The error of the player is:
Internal Exception:io.netty.handler.codec.DecoderException:Failed to decode packet'clientbound/minecraft.commands"

（The above text is scanned using a text scanning tool）

Minecraft server error is

[19:07:08] [Server thread/INFO]: aaa[/171.212.11.103:10703] logged in with entity id 87 at (2.5, 78.0, 42.5)
[19:07:08] [Server thread/INFO]: aaa joined the game
[19:07:51] [Server thread/INFO]: Made aaa a server operator
[19:07:51] [Server thread/INFO]: aaa lost connection: Disconnected
[19:07:51] [Server thread/INFO]: aaa left the game

video:
"Although it's in Chinese, you should know what operation this is, I hope you don't mind, thank you."

https://drive.google.com/file/d/1xC2OHuNuTrhJHR_saev6zAOga8V_9zJ6/view?usp=drive_link

Machine translation, I hope you can understand, thank you.