Expected:
Supposed to create a world and load into it normally.

Actual:
World creation event gets stuck at 100% and doesn't spawn the player in.

Once I removed the mod from the pack, I was able to create a world and load into it properly.

Crash log:
crash-2020-02-13_01.54.07-server.txt

You've got quite a lot of mods there. Try running the mod alone and see if the issue persists.

I just wanted to let you know that it seems to be some sort of conflict between Upgrade Aquatic and The Endergetic Expansion. I had the same issue, removed Endergetic, and am now loading normally.