1.20.4: Config file not being created. I tried manually creating it but it is still not recognised. This means I cannot enable the requirements of achievements. I installed the mod via. PolyMC 6.1. I also tried installing ModMenu mod to try and access settings, but the error is:

Failed to load config screen for 'betteradvancements', not Mod Menu java.lang.NoClassDefFoundError:me/shedaniel/clothconfig2/api/ConfigBuilder

And from Minecraft log:
[20:32:32] [Render thread/WARN]: The 'betteradvancements' mod config screen is not available because me/shedaniel/clothconfig2/api/ConfigBuilder is missing.

Happens in 1.20.1 on Fabric as well.
[21:19:22] [Render thread/ERROR]: java.io.FileNotFoundException: /home/kasey/.local/share/PrismLauncher/instances/Better Adventures--/.minecraft/config/betteradvancements.json (No such file or directory)
Seems like the file just straight up isn't getting created despite the fact that it should

This is also happening on the latest version for 1.21

[17:26:46] [Render thread/ERROR]: java.io.FileNotFoundException: C:\Users\Josh\AppData\Roaming\PrismLauncher\instances\Fabric 1.21\.minecraft\config\betteradvancements.json (The system cannot find the file specified)

Fixed in 7d961a2