I showed this to the Wilder Wilds devs and they told me to put it here; something about "the feature order of their pumpkin and sugar cane features" if that's helpful.

If you have Wilder Wilds installed, there's some kind of error caused by the co-existence of the Arid Savanna/Forest from that mod and the Firecracker Chaparral from OTBWG. This hangs the world creation screen at 0% permanently and you have to kill the Minecraft instance.

Thankfully, the temporary fix is simply just disabling either the Arid biomes from that mod or the Firecracker biome from this mod (I ultimately chose that mod, but both work). This is on 1.21.8 Fabric with both mods on their latest version. You can also disable either mod, but that's obviously a nuclear option.

Here's the log, it's not crazy extensive because there's no crash report given that the game just hangs. If I can do anything else let me know; thank you :).

Can you send me the link to the mod

Can you send me the link to the mod

https://modrinth.com/mod/wilder-wild here you go my bad

this happens with more than just that mod. idk why. it almost seems random

public static void addDesertVegetation(BiomeGenerationSettings.Builder builder) {
builder.addFeature(Decoration.VEGETAL_DECORATION, VegetationPlacements.PATCH_DRY_GRASS_DESERT);
builder.addFeature(Decoration.VEGETAL_DECORATION, VegetationPlacements.PATCH_DEAD_BUSH_2);
}

It's one of these features

this happens with more than just that mod. idk why. it almost seems random

What mods do you run into this with?

i found the error to be terralith and blooming biomesphere

Fixed in Latest commits and FrozenBlock/WilderWild@83a4ad1