The newest forge update of BYG changed the texture file path from textures/blocks to textures/block
The fabric version still has textures/blocks as the file path.
Sadly since both versions have the same mod id and same blockstate/model paths, I'm unable to support both of them in the same pack. Since I personally use fabric and think it's the future, only the fabric version of BYG is supported from now on, until both get the same texture paths.

Fixed in d89c807