FilmKrippe666

I checked and have no client-side-only mods on the server The error must lie somewhere else

I've been trying to set up a 1.20.1 server for my Modpack and kept getting the same error message whenever booting up the server, it didn't matter how I changed the mods, the only time the server would start was without mods. It has something to do with SpongeForge and Mixin, but I don't know much about this topic.