(1.17.1) how to fix dark chunks or erase chace?

[MSandro]

not sure if this features are implemented, if yes, how can I do it?

[Fenixin]

Hello!

Sorry for the late answer. As far as I know it's not implemented, that said, I'm afraid I don't know what are dark chunks/erase chance? Could you please provide some more information? Any examples?

The name alone doesn't give me anything to work with.

[VL4DST3R]

I think he means chunks that need the light level to be updated, an old vanilla bug that would cause odd looking dark under-hangs when generating the map. Assuming the problem isn't wide-spread, you can use tools like async worldedit (not the basic worldedit as it lacks that functionality AFAIK) to force updates in specific regions, it may be what you need.