I was trying to use this mod on my server but every time I tried loading into the server it crashes the server and I get "Better Portals ran into an issue". I can't post a log because It never makes a log for this for some reason.

Make sure you've got Forgelin installed.
I doubt there isn't more info than just that one sentences. Reading this might help.

I do. my game works perfectly fine in single player buy as soon as I try to join multiplayer it says that and the server crashes although it happens even when the mod isn't installed and other mods run into issues instead so im really not sure

it says that

Who says that? I don't recall ever reading such a sentence in that context. Screenshots might help.

the server crashes

So, if the server crashes, then there must be some kind of crash report, how else would you know that it crashes?!

it happens even when the mod isn't installed

Then why ask here? Maybe try the Forge Forum instead?

ok, I'll just ask on the forum