[1.16.3] Custom Plant No longer Generating.

I'm trying to make a berry bush that generates in forests and plains (more common in forests), and now it doesn't generate at all.

Here's the code:

package com.pickleface.lifecraft.world.gen;

import com.google.common.collect.ImmutableSet;
import com.pickleface.lifecraft.LifeCraft;
import com.pickleface.lifecraft.blocks.BlueberryBush;
import com.pickleface.lifecraft.util.Registry;
import net.minecraft.block.Blocks;
import net.minecraft.world.biome.Biome;
import net.minecraft.world.gen.GenerationStage;
import net.minecraft.world.gen.blockplacer.SimpleBlockPlacer;
import net.minecraft.world.gen.blockstateprovider.SimpleBlockStateProvider;
import net.minecraft.world.gen.feature.*;
import net.minecraftforge.api.distmarker.Dist;
import net.minecraftforge.event.world.BiomeLoadingEvent;
import net.minecraftforge.eventbus.api.SubscribeEvent;
import net.minecraftforge.fml.common.Mod;

@Mod.EventBusSubscriber(modid = LifeCraft.MOD_ID, bus = Mod.EventBusSubscriber.Bus.FORGE, value = Dist.CLIENT)
public class VeganGen {

    @SubscribeEvent
    public static void generateBushes(BiomeLoadingEvent event) {
        BlockClusterFeatureConfig BLUEBERRY_BUSH_PATCH_CONFIG = (new BlockClusterFeatureConfig.Builder(new SimpleBlockStateProvider(Registry.BLUEBERRY_BUSH.get().getDefaultState().with(BlueberryBush.AGE, 3)), SimpleBlockPlacer.PLACER)).tries(64).whitelist(ImmutableSet.of(Blocks.GRASS_BLOCK.getDefaultState().getBlock())).func_227317_b_().build();

        ConfiguredFeature<?, ?> PATCH_BLUEBERRY_BUSH = Feature.RANDOM_PATCH.withConfiguration(BLUEBERRY_BUSH_PATCH_CONFIG);
        ConfiguredFeature<?, ?> PATCH_BLUEBERRY_DECORATED = PATCH_BLUEBERRY_BUSH.withPlacement(Features.Placements.PATCH_PLACEMENT).chance(24);

        if (event.getCategory().getString().equals("forest")) {
            event.getGeneration().withFeature(GenerationStage.Decoration.VEGETAL_DECORATION, PATCH_BLUEBERRY_DECORATED);
        } else if (event.getCategory().getString().equals("plains")) {
            event.getGeneration().withFeature(GenerationStage.Decoration.VEGETAL_DECORATION, PATCH_BLUEBERRY_BUSH);
        }
    }
}

Any help is appreciated.