I have been working on some addons recently and I noticed that feature rules don't seem to work properly in the latest patch update. For example, when I load an addon it will give me this error in the content log:

[FeatureRegistry][error]-My World | dd:wardenstone_ancient_city | The feature uses the feature type 'minecraft:vegetation_patch_feature', which is considered internal and thus not compatible with this engine version of the game.

[FeatureRegistry][error]-My World | cavesplus:black_sand | The feature uses the feature type 'minecraft:vegetation_patch_feature', which is considered internal and thus not compatible with this engine version of the game.

• This error will come after the previous one:

[FeatureRegistry][error]-My World | No definition found for feature 'cavesplus:black_sand'

For reference, here is the link for the addons if it needs to be tested properly.

https://github.com/Herobrine011840/Caves-Plus-Addon-for-Minecraft-Bedrock

If it is an intended feature, can you please assist with what I would need to do to fix the error.