None can join my server

I doint know what happening, my server starts but noone can join it! we are doing a custom modpack, but i have installed all the right mods on my minecraft.

here are the logs if that helps: https://mclo.gs/vP7PzK5

Quote from Roman

https://mclo.gs/vP7PzK5#L398

The mod elevatorid seems to be different on client and server.

it was because i was supposed to delete it

Quote from Roman

So it's fixed?

maybe but now it crashes every 2nd time or something

edit: every time

no it works now, buuut my friend is having trouble with his curseforge do you know a place to get help with that?