Me and my friends are trying to play a modded server (Aternos) and we're using simply swords. Yet when testing it out on the server, none of the simply swords items work, theyre all just item.minecraft.air. Except for the Runic Grimoire, which it doesnt work at all. It works just fine on singleplayer, any ideas on whats happening?

Fixed, I only put the previous version of the mod = [FORGE v1.55.0-1.20.1]