I keep reading that Spigot has a compatibility layer to work with 1.12 plugins, and that WorldEdit is one which should work. I put two different builds of WorldEdit on the server and they just give errors. One being version 184.108.40.206 (release) and the other being version 6.1.9 (dev build). Is there something I am missing? Are you suppose to 'enable' this compatibility layer?