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Forge Version: 1.18.2 40.2.14 Here is the log: https://pastebin.com/w0HKscqS I do not understand what is going on, the mods I had active at that time were: caelus-forge-1.18.1-3.0.0.2.jar comforts-forge01.18.2-5.0.0.6.jar curioofundying-forge-1.18-5.3.0.0.jar curios-forge-1.18.2-5.0.9.2.jar curiouselytra-forge-1.18.1-5.0.1.0.jar do-a-barrel-roll-2.5.3+1.18.2-forge.jar Mantle-1.18.2-1.9.50.jar rubidium-0.5.6.jar TConstruct-1.18.2-3.7.1.155.jar voicechat-forge-1.18.2-2.5.15.jar The problem apparently started when adding mods like Ice & Fire: Dragons, Quark, the Curios etc.

The error still remains. For additional information, I can send you some more code,  main class Afraid.java:  package org.mymod.afraid; import net.minecraft.resources.ResourceLocation; import net.minecraft.world.entity.EntityType; import net.minecraft.world.entity.MobCategory; import net.minecraft.world.entity.monster.Zombie; import net.minecraftforge.common.MinecraftForge; import net.minecraftforge.event.entity.EntityAttributeCreationEvent; import net.minecraftforge.eventbus.api.IEventBus; import net.minecraftforge.eventbus.api.SubscribeEvent; import net.minecraftforge.fml.common.Mod; import net.minecraftforge.fml.event.lifecycle.FMLClientSetupEvent; import net.minecraftforge.fml.event.lifecycle.FMLCommonSetupEvent; import net.minecraftforge.fml.javafmlmod.FMLJavaModLoadingContext; import net.minecraftforge.registries.DeferredRegister; import net.minecraftforge.registries.ForgeRegistries; import net.minecraftforge.registries.RegistryObject; @Mod("afraid") public class Afraid { public static final String MODID = "afraid"; public static final DeferredRegister<EntityType<?>> ENTITY_TYPES = DeferredRegister.create(ForgeRegistries.ENTITY_TYPES, MODID); public static final RegistryObject<EntityType<AfraidBoss>> AFRAID_BOSS = ENTITY_TYPES.register("afraid_boss", () -> EntityType.Builder.of(AfraidBoss::new, MobCategory.MONSTER) .sized(0.6F, 1.95F) // Size of the entity .build(new ResourceLocation(MODID, "afraid_boss").toString())); public Afraid() { IEventBus modEventBus = FMLJavaModLoadingContext.get().getModEventBus(); ENTITY_TYPES.register(modEventBus); modEventBus.addListener(this::commonSetup); MinecraftForge.EVENT_BUS.register(this); } private void commonSetup(final FMLCommonSetupEvent event) { // Additional common setup if needed } @Mod.EventBusSubscriber(modid = MODID, bus = Mod.EventBusSubscriber.Bus.MOD) public static class ModEvents { @SubscribeEvent public static void onRegisterAttributes(EntityAttributeCreationEvent event) { event.put(Afraid.AFRAID_BOSS.get(), AfraidBoss.createAttributes().build()); } } } EntityEvents.java:  package org.mymod.afraid; import net.minecraft.world.entity.EntityType; import net.minecraft.world.entity.MobCategory; import net.minecraftforge.registries.DeferredRegister; import net.minecraftforge.registries.ForgeRegistries; import net.minecraftforge.registries.RegistryObject; public class EntityEvents { public static final DeferredRegister<EntityType<?>> ENTITY_TYPES = DeferredRegister.create(ForgeRegistries.ENTITY_TYPES, Afraid.MODID); public static final RegistryObject<EntityType<AfraidBoss>> AFRAID_BOSS = ENTITY_TYPES.register("afraid_boss", () -> EntityType.Builder.of(AfraidBoss::new, MobCategory.MONSTER) .sized(0.6F, 1.95F) .build("afraid_boss")); } As for attributes, they are only in the boss class itself.

It is valkyrienskies

Hello, new coder and first time posting, sorry if I get stuff wrong Been having a really difficult time trying to figure out this potion effect. I want to give a potion effect that denies the wither effect on the player. I've looked over a lot of different tutorials, and through some other mods and made something that sort of works but it was based on applyEffectTick and the players would still take a tick of damage before the potion effect kicked in. When looking up other ways to do this I saw there was like the PotionEvent but whenever I try to use it, I get errors of how it cannot be defined. This is my code right now that doesn't work package io.github.AndroPups.tsmp_models.effect; import net.minecraft.world.effect.MobEffect; import net.minecraft.world.effect.MobEffectCategory; import net.minecraft.world.effect.MobEffects; import net.minecraft.world.entity.LivingEntity; public class NoWitherEffect extends MobEffect { public NoWitherEffect(MobEffectCategory mobEffectCategory, int color) { super(mobEffectCategory.BENEFICIAL, color); } public static void onPotionAdded(PotionEvent.PotionAddedEvent event) { LivingEntity entity = event.getEntityLiving(); MobEffect potionEffect = event.getPotionEffect().getEffect(); if (potionEffect == MobEffects.WITHER); { entity.removeEffect(MobEffects.WITHER); } } @Override public boolean isDurationEffectTick(int duration, int amplifier) { return true; } } And this code works but occasionally still applies damage because of ticking effect.   package io.github.AndroPups.tsmp_models.effect; import net.minecraft.world.effect.MobEffect; import net.minecraft.world.effect.MobEffectCategory; import net.minecraft.world.effect.MobEffects; import net.minecraft.world.entity.LivingEntity; public class NoWitherEffect extends MobEffect { public NoWitherEffect(MobEffectCategory mobEffectCategory, int color) { super(mobEffectCategory.BENEFICIAL, color); } @Override public void applyEffectTick(LivingEntity pLivingEntity, int pAmplifier) { if (!pLivingEntity.level().isClientSide()) { if (pLivingEntity.hasEffect(MobEffects.WITHER)); { pLivingEntity.getEffect(MobEffects.WITHER); } } } @Override public boolean isDurationEffectTick(int duration, int amplifier) { return true; } } I've tried to see if PotionEvent was removed from recent Forge updates but can't really find any information on it. Any information at all would be helpful! Thanks!

Right after "private final Item item;" you will need "private final float chance;" Then you will need to add that variable to your constructor the same way you did for Item. It should work after that.