Hello!

I have been experiencing a startup crash. This is the crash log (Paste.ee).

minecraft_version=1.16.2
yarn_mappings=1.16.2+build.46
loader_version=0.9.3+build.207
fabric_version=0.20.1+build.401-1.16

♥

The biome api has not been updated to 1.16.2 yet and it does not exist in newer versions. Some other mod is pulling it in. So I'd exclude fabric api dependency from any mods you depend on.