Modpack version
1.77

Issue
Server cannot start when SpongeForge is present. Updating FarSeek from 2.4 to 2.5 fixes the issue

Logs
https://pastebin.com/xgCWtHFW

also information found here: https://docs.spongepowered.org/stable/en/server/spongineer/incompatible.html#farseek

I don't know yet if updating FarSeek creates other issues with other mods, sadly

Thanks for letting me know, I'll make sure to get that fixed eventually, but no ETA :)