Using level-type=Wasteland, the world doesn't generate the wasteland-reborn on the server, or if it does, clients are unable to join it. Spits out a lot of errors too.

Steps to reproduce:
Download the latest version of it from curseforge (1.12.2) and run it on your own MC server and try to join.

This should be fixed in the latest release here on Github and on Curse, closing.