Mod/Modpack help - BCG+ (w cobble)

Hi!

I am trying to connect to the NA server for BCG+ with Cobblemon, but everytime I do I get this message (See attached photo)

Now I have added the DiagonalWalls like it says, but the other one I cant find.

Maybe someone can help? :)

Thanks

you could try reinstalling the modpack

it looks like you either have extra mods or are missing acouple

Usually means you have the incorrect modpack version.