When i try to use this mod on a LAN server with my brother who doesn't have the mod installed (he is using Vanilla Minecraft), he gets this error when he tries to join my world:

**Connection Lost

Unsupported (vanilla?) client!
This server requires modded client to join!**

I'm using Quilt Loader on version 1.20.1 of Minecraft.

This also happens if the host has only this mod + deps (Fabric), and the client has only the Fabric API. With a Fabric host, vanilla clients can still join. Tested with version 0.7.4+1.20.4 of the mod.