What's the issue you encountered?

Cannot start server

How can the issue be reproduced?

start a server

Logs

https://pastebin.com/9GTxiSAC

Mod Version

39.0.8

Additional information

Doesn't work in a server environment.

You're using an outdated version of the mod. You need to update it.

I'm seeing a lot of updates, is it stable enough for a modpack or should I wait?

Stability is in the eye of the beholder really. Will it be entirely bug free? Probably not... But will it ever be? Also probably not. I can't really say any other mods will be any different either. If your definition of stability is whether it will crash and corrupt your worlds every few seconds then no, it won't.