Crash on Launch - Mixins

Some coremods are not compatible with Sponge and I believe it has to do with the Mixins that Sponge uses. I believe there are issues that have been opened up about it, not sure if any fixes are in the works though.

https://forums.spongepowered.org/t/server-unable-to-launch-when-sponge-is-installed-with-codechickencore