Can't join my modded server.

Hello, so I have been trying to join my modded server but It won't let me.
when I try to join the server in Minecraft, instead of letting me join the world a bunch of words appear from the mod packs.
the only option it gives me is to go back to the server list, and when I do that it says in logs that I have been disconnected. I really don't know what I'm doing wrong... (and yes I have downloaded the right version of all the mods.)
the only mods that I have are:
-better nether

-better end

-fabric api

-bclib

Vanilla server log [#Y14XAQa] - mclo.gs

this is what I get when I try to join:

I think it should be a custom-modded server.