I install last version of this mod on my server, and it run too, bu when I want go to it, give this error:
https://s6.uupload.ir/files/problem_dr1t.jpg
can any who help to skip this problem?! :I

You need the mod installed on your client too
The same reason you can't join a 1.18 server with 1.12 or any other version because they don't have the same features