module 'utf8' not found

[SysuJayce]

Hello there,

I tried to uninstall and reinstall xeus-lua via mamba, but still I can't use utf8 lib.
Below is the error msg.

[string "utf8 = require("utf8")"]:1: module 'utf8' not found:
	no field package.preload['utf8']
	no file '/Users/x/miniforge3/envs/x/share/lua/5.4/utf8.lua'
	no file '/Users/x/miniforge3/envs/x/share/lua/5.4/utf8/init.lua'
	no file '/Users/x/miniforge3/envs/x/lib/lua/5.4/utf8.lua'
	no file '/Users/x/miniforge3/envs/x/lib/lua/5.4/utf8/init.lua'
	no file './utf8.lua'
	no file './utf8/init.lua'
	no file '/Users/x/miniforge3/envs/x/lib/lua/5.4/utf8.so'
	no file '/Users/x/miniforge3/envs/x/lib/lua/5.4/loadall.so'
	no file './utf8.so'

And this is the enviroment:

lua                              5.4.7               h3b87954_0    conda-forge
xeus                           5.2.0               ha393de7_0    conda-forge
xeus-zmq                  3.1.0                h277b3ab_1    conda-forge