Error: No worlds are enabled. There's nothing to do!

[SamGamerYT]

next-cycle:
one_nether: -100
one_the_end: -100
one: -100

What should I do?

[SamGamerYT]

Also tried

next-cycle:
one_nether: 1
one_the_end: 1
one: 1

It just won't start ;-;

[Jikoo]

You need to enable Regionerator in the worlds you want it to run on. You haven't configured any worlds, so Regionerator does not have anything to do. https://github.com/Jikoo/Regionerator/wiki/Configuration#worlds