I don't know if this is the right place to post...
I have a modded mc server, but i keep getting this strange error, but when i try to create a singleplayer world i can play in it.
What i tried:
Creating a new world,
Resetting the whole server.
Pic of mods and the error message attached.
Test it without Botania and SilentGear
Also make sure that client and server have the exact same mod versions