[1.16.4] GlobalEntityTypeAttributes problem

[SubliminallySublime 2]

Hello. I am getting this crash on right click with a spawn egg:
 

[00:17:29] [Server thread/FATAL] [minecraft/ThreadTaskExecutor]: Error executing task on Server
java.lang.NullPointerException: null
	at net.minecraft.entity.ai.attributes.AttributeModifierManager.getAttributeValue(AttributeModifierManager.java:67) ~[forge:?] {re:classloading}
	at net.minecraft.entity.LivingEntity.getAttributeValue(LivingEntity.java:1849) ~[forge:?] {re:classloading}
	at net.minecraft.entity.LivingEntity.getMaxHealth(LivingEntity.java:1610) ~[forge:?] {re:classloading}
	at net.minecraft.entity.LivingEntity.<init>(LivingEntity.java:209) ~[forge:?] {re:classloading}
	at net.minecraft.entity.MobEntity.<init>(MobEntity.java:108) ~[forge:?] {re:classloading,pl:accesstransformer:B}
	at net.minecraft.entity.CreatureEntity.<init>(CreatureEntity.java:13) ~[forge:?] {re:classloading}
	at net.minecraft.entity.monster.MonsterEntity.<init>(MonsterEntity.java:29) ~[forge:?] {re:classloading}
	at testmod.entity.testentity.EntityTest.<init>(EntityTest.java:40) ~[?:?] {re:classloading}

From what I can tell, this means it doesn't have custom attributes, namely MaxHealth. I am registering them like so:

In my Mod file:

//in constructor
	FMLJavaModLoadingContext.get().getModEventBus().addListener(this::setupCustomAttributes);



private void setupCustomAttributes(final ParallelDispatchEvent event)
{
    event.enqueueWork(() -> {
        System.out.println("CALLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLED");
        GlobalEntityTypeAttributes.put(ModEntities.ENTITY_TEST.get(), EntityTest.setCustomAttributes().create());
    });
}

In my Entity class 

public class EntityTest extends MonsterEntity {

  public static AttributeModifierMap.MutableAttribute setCustomAttributes() {
     return MonsterEntity.func_233666_p_()
           .createMutableAttribute(Attributes.MAX_HEALTH, 100.0D)
           .createMutableAttribute(Attributes.MOVEMENT_SPEED, 1D);
  }
}

In my ModEntities class

public class ModEntities
{
	public static final RegistryObject<EntityType<EntityTest>> ENTITY_TEST = registerEntityAndEgg(() -> EntityType.Builder.create(EntityTest::new, EntityClassification.MISC)
			.size(1.5f, 2.25f)
			.build(new ResourceLocation(TestMod.MOD_ID, "test_entity").toString()), "test_entity", EntityTest.COLOR1, EntityTest.COLOR2);
	
	public static final <T extends Entity> RegistryObject<EntityType<T>> registerEntityAndEgg (Supplier<EntityType<T>> entityTypeSupplier, String name, int color, int color2)
	{
		RegistryObject<EntityType<T>> registeryEntity = Registration.ENTITIES.register(name, entityTypeSupplier);
		
		//TODO: STORE?
		RegistryObject<Item> SPAWN_EGG = Registration.ITEMS.register(
				"spawn_egg_" + name,
				() -> new SpawnEggItem(entityTypeSupplier.get(), color, color2, new Item.Properties().group(ItemGroup.MATERIALS)));
	
		return registeryEntity;
	}
}

And finally my registration class:

public class Registration
{
	public static final DeferredRegister<Block> BLOCKS = DeferredRegister.create(ForgeRegistries.BLOCKS, TestMod.MOD_ID);
	public static final DeferredRegister<Item> ITEMS = DeferredRegister.create(ForgeRegistries.ITEMS, TestMod.MOD_ID);
	
	public static final DeferredRegister<EntityType<?>> ENTITIES = DeferredRegister.create(ForgeRegistries.ENTITIES, TheUpsideDownMod.MOD_ID);
	
	public static void register()
	{
		IEventBus modEventBus = FMLJavaModLoadingContext.get().getModEventBus();
		
		BLOCKS.register(modEventBus);
		ITEMS.register(modEventBus);
		
		ENTITIES.register(modEventBus);
		
	}
}

The method IS called as determined by breakpoints and my output call. 

I am not sure what is up here. I am not sure how to test any further than my output and breakpoint checks. Should I update to 1.16.5 and try again?
 

Edited February 23 by SubliminallySublime
Code correction

[diesieben07 7697]

2 hours ago, SubliminallySublime said:

private void setupCustomAttributes(final ParallelDispatchEvent event)

This makes zero sense. This means you will receive all subclasses of this event, which makes this event handler meaningless. Use FMLCommonSetupEvent.

 

Additionally: Do not put a DeferredRegister and its registry entries in separate classes. A DeferredRegister field should be private.

[SubliminallySublime 2]

7 hours ago, diesieben07 said:

This makes zero sense. This means you will receive all subclasses of this event, which makes this event handler meaningless. Use FMLCommonSetupEvent.

 

Additionally: Do not put a DeferredRegister and its registry entries in separate classes. A DeferredRegister field should be private.

Thank you!  I was not aware FMLCommonSetupEvent had an enque event I could access. I am getting a different crash now but I think I can solve it.

I am also correcting my DeferredRegister design. Thank you.