I am unable to craft an Animal Feeding Trough with oak slabs.

I downloaded animal_feeding_trough-1.0.3+1.18.1.jar and put it in my client's and server's mods folder. I have Fabric API 0.46.2 in both mods folders.

I am running Minecraft 1.18.1. On the server, I have the latest PaperMC.

Is this mod compatible? Do I need to use a different type of wood slab?

This mod requires Fabric on the server and client. It is not compatible with PaperMC. When I removed PaperMC and switched to Fabric on the server, then this mod worked.