Mod Name

Fabric mods which use Fabric 0.16+

Mod Homepage

N/A

Minecraft version

1.21.1

Describe the bug

Connector lacks support for mods which

Steps to reproduce

Install a mod which uses new versions of fabric (I used countered's terrain slabs), then look at the crash
...

Logs

N/A

Additional context

No response

Tested the mod and it works fine on connector beta 4. Not sure what "fabric" refers to here. FFAPI is downloaded separately.