Compatible with lower versions

[ChatDeepseek]

Why do mod updates only fix bugs for new versions? I'm a player of version 1.21.11, but I encountered a very serious bug. Thinking that your mod would update and fix these bugs, it did indeed get fixed. However, the lower versions simply cannot use it. Have you considered this issue? Didn't it say that the older version would receive crucial fixes? But when I entered the Hell portal, I got stuck.

[FurryMileon]

In general, we always develop updates for new versions first and then port them to older ones once we get more or less stable results (BUT there's still a small caveat — we're not sure this will be the case for versions below 26.1, because Minecraft's code changed significantly starting from 1.21.11, plus the new Java, so porting code to older versions has become much harder, and I'm not sure we'll be doing that (we're definitely done with 1.21.1, we've suffered enough with it)).

As for your issue, try using this build:
https://github.com/AxalotLDev/Async/actions/runs/23707701927