Hello! 
	I am new to forge modding, and am trying to make an entity. I followed a YouTube tutorial from TechnoVision, but I get an error when I try to register the entity. 
	This is the file on which I try to register the entity:
 
public class ModEntityTypes {
    public static DeferredRegister<EntityType<?>> ENTITY_TYPES = DeferredRegister.create(ForgeRegistries.ENTITIES, TerraLands.MOD_ID);
    // Entity Types
    public static final RegistryObject<EntityType<grenadeEntity>> GRENADE = ENTITY_TYPES.register("grenade",
            () -> EntityType.Builder.create(grenadeEntity::new, EntityClassification.MISC)
                    .size(0.25f, 0.25f)
                    .build(new ResourceLocation(TerraLands.MOD_ID, "grenade").toString()));
}
	I get an error here:
 
            () -> EntityType.Builder.create(grenadeEntity::new, EntityClassification.MISC)
	For whatever reason, the "new" after "grenadeEntity::" gives me an error saying "Cannot resolve constructor 'grenadeEntity'". 
	The grenadeEntity class looks like this:
 
public class grenadeEntity extends TNTEntity {
    public grenadeEntity(World worldIn, double x, double y, double z, @Nullable LivingEntity igniter) {
        super(worldIn, x, y, z, igniter);
    }
    public grenadeEntity(EntityType<? extends TNTEntity> type, World worldIn) {
        super(type, worldIn);
    }
    @Override
    protected void explode() {
        float f = 4.0F;
        this.world.createExplosion(this, this.getPosX(), this.getPosYHeight(0.0625D), this.getPosZ(), 4.0F, Explosion.Mode.NONE);
    }
}
	I tried changing the second constructor:
 
    public grenadeEntity(EntityType<? extends TNTEntity> type, World worldIn) {
        super(type, worldIn);
    }
	to
 
    public grenadeEntity(EntityType<?> type, World worldIn) {
        super(type, worldIn);
    }
	which seems to fix the problem, but then there's a new problem:
 
            () -> EntityType.Builder.create(grenadeEntity::new, EntityClassification.MISC)
                    .size(0.25f, 0.25f)
                    .build(new ResourceLocation(TerraLands.MOD_ID, "grenade").toString()));
	This entire section of code gets highlighted, giving an error that reads as follows:
 
	 
	Required type:     RegistryObject <EntityType<grenadeEntity>> 
	Provided:              RegistryObject <EntityType<Entity>> 
	 
	I am a little stuck and would greatly appreciate some help on what is going on and how to fix it. Thanks!