What's the issue you encountered?

A crash upon starting the game.

How can the issue be reproduced?

I've downloaded various optimization mod and tried to use Terrablender with BYG. The issue can be reproduced by attempting to start the game.

Logs

https://gist.github.com/jacobmoerch/a77cada9b12c8087ec27cf801689e7bb

Mod Version

TerraBlender-fabric-1.19.2-2.0.1.130

Additional information

I've tried using all 1.19.2 versions of terrablender and they call cause the same crash. I'm currently using the latest stable release.

This would be because one of those optimisation mods is locking the registry before they normally should be. I would suggest finding and removing whatever that mod is. This issue would already be resolved on 1.19.3 though as a consequence of the change to using JSON for biome registration.