Bug Report

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What's the issue you encountered?

[Vampire Forests wont generate in Biomes O' Plenty worlds.]

How can the issue be reproduced?

[
- Set worldgen type to 'biomesoplenty'
- Generate world (server or single player, doesnt matter)
- use /locatebiome vampirism:vampire_forest
- no such biome found
]

Logs

[-]

Mod Version

[BiomesOPlenty-1.16.3-12.0.0.417-universal, Vampirism-1.16.3-1.6.1]

Addition:
Does BoP override config/weights for vampirism forests?
Is there any way to add/edit the rarity of this biome?

This was fixed in 1.16.4. You need to update BoP, Forge and Minecraft. Most 1.16.3 mods will work on 1.16.4 with no changes, hence there’s really no reason to stay on 1.16.3.