Mose

That part doesnt matter. Its a case on what to target. Recently found our that api 8 is end of life so sadly this one wont be fixed. But you...

https://github.com/SpongePowered/Sponge/blob/d469dbd976d860e45af0db8a86afb768d1fafd2f/src/mixins/java/org/spongepowered/common/mixin/api/minecraft/world/level/LevelMixin_API.java#L524

Abnormal core is known and has a fix: take a look at the official docs. https://docs.spongepowered.org/stable/en/server/spongineer/incompatible.html More information about the other three would be useful

Turns out someone beat me to it https://github.com/LovinLifee/WaifUPnP Mind pr-ing this in?