NullPointerException

[Zonas51]

Ошибка возникает когда я кладу созданный мной предмет (меч) в наковальню с зачарованной книгой, в любом порядке
Вот код для регистрации предмета:

public class Moditems {
    public static final DeferredRegister<Item> ITEMS =
            DeferredRegister.create(ForgeRegistries.ITEMS, WBMod.MOD_ID);



    public static final RegistryObject<Item> FIREING_SWORD = ITEMS.register("fireingsword",
            () -> new SwordItem(ModItemTier.FIREING, 11, 3F, new Item.Properties()
                    .tab(ItemGroup.TAB_COMBAT)
                    .fireResistant()
                    .defaultDurability(3600)));

    public static void register(IEventBus eventBus){
        ITEMS.register(eventBus);
    }
}

код для ModItemTier:

public enum ModItemTier implements IItemTier  {
    FIREING(4, 3600, 2F, 36F, 10,
            () -> { return Ingredient.of(new ItemStack(Items.BLAZE_ROD));
    });

    private final int level;
    private final int uses;
    private final float speed;
    private final float damage;
    private final int enchantability;
    private final LazyValue<Ingredient> repairIngredient;

    ModItemTier(int level, int durability, float miningSpeed, float damage, int enchantability, Supplier<Ingredient> repairIngredient) {
        this.level = level;
        this.uses = durability;
        this.speed = miningSpeed;
        this.damage = damage;
        this.enchantability = enchantability;
        this.repairIngredient = new LazyValue<>(repairIngredient);
    }
    ...

 

[HomaPlus]

isValidRepairItem наверное нужно указать предмет для починки?