I attempted to add some custom dimensions to the dimension list in config files but the server will crash on startup.
Could it possibly to make anti-xray feature become effective in modded dimensions?

It's possible to enable antixray in any dimension (also modded), please share the crash reports / logs, your config and the mod, whose dimension you are trying to enable antixray in.

It's possible to enable antixray in any dimension (also modded), please share the crash reports / logs, your config and the mod, whose dimension you are trying to enable antixray in.

I tested with twilight forest and blue skies on Forge 1.19.2

I'm not sure if I messed sth up when configured antixray.
antixray.txt
latest.log
crash-2023-07-14_19.34.25-fml.txt

modlist:
anti-xray-1.3.0-Forge-1.19.2
structure_gel-1.19.2-2.7.2
twilightforest-1.19.2-4.2.1518-universal
blue_skies-1.19.2-1.3.20

Looks like it wasn't really possible to define configs for custom dimensions, because : is an invalid character in toml tables. In 1.3.1 you can now define them like this: ['blue_skies:everbright']