I am getting the following error when the server boots. I am sure it's because of 1.21.4.

[03:06:51 INFO]: [MapModCompanion] Enabling MapModCompanion v0.10.0
[03:06:51 ERROR]: [MapModCompanion] Unexpected world: CraftWorld{name=witp}
[03:06:51 ERROR]: [MapModCompanion] For every world plugin will now send their unique IDs
[03:06:51 INFO]: [MapModCompanion] world_id handler will not be available (couldn't register incoming plugin channel: world_id (can be safely ignored on 1.13+))

Don't worry, you can ignore this. Same as #159