Null registry error on Forge 2854

[2ndRecon]

This is a long shot, but I'm a newb at Java, and trying to fix this. It appears to be simple, but; yeah, total beginner here.

The as_compiled src from this Git throws a null registry error with the latest forge for 1.12.2. (build-2854)

error:
java.lang.NullPointerException: Can't use a null-name for the registry, object null.

offending classes:
at (BiomeHandler.java:27)
+(BiomeHandler.java:15)
+(CommonProxy.java:52)

Appears that there needs to be an explicit registryName set for the Biome object, before the register event is called.

Not sure the best way to go about handling this ? Since the Biomes extend from

[2ndRecon]

Whats even more odd about this, is if I load up NEI, and ebxl, into a client image from this forge version, I can dump the biomes and see them registered.