Can't add biomes to Fabric 1.19.2 even with TerraBlender plugin

The title pretty much says it. I've tried reinstalling the plugin, re-building the gradle, and retrying making the biome. The biome is called the Deepwood Forest if that helps. I'm using Mcreator 2023.2 with the Fabric Generator plugin for 1.19.2 and using the Terrablender plugin.