When loading this mod on arclight with create-0.5.1c, the server crashed; but it didn't cause crash on client side. I think the crash was caused by this mod but not arclight.
Here is the crash-report.
crash-2023-09-07_15.06.19-fml.txt

this could be a problem with arclight

Is this your first time initialising the game?

Maybe try load without arclight

Maybe try load without arclight

It's the first time initialising the game. When loading without arclight, it crashed too.
crash-2023-09-08_18.35.42-fml.txt

Mod version, create mod version, minecraft version pls

Just checkin', because I do think I fixed this on v1.3

Welp I think I'll try to fix this the next time I update this mod

Mod version, create mod version, minecraft version pls

All the information shows in the crash-report.
Mod version: 1.18.2-v2.0.2
create mod version: 0.5.1c

Hm

What mod you have except for this one

What mod you have except for this one

None

Check if creating a separate world on client crashes the game too

It doesn't crash on client side.
I think the game crash because of using a class that not existing on the server side, as the crash-report shows.

Could also be a duplicate of #11

Fixed in 2.0.3