Broken Furnace Custom Recipes

I have been working on an overhaul data pack but I found an odd bug.I don't why it's doing. I just copy the same working file to another just changed one word from iron to gold but the iron version does works.

Here the smelting codes

{
  "type": "smelting",
  "ingredient": [
    {
      "item": "minecraft:iron_pickaxe"
    },
    {
      "item": "minecraft:iron_shovel"
    },
    {
      "item": "minecraft:iron_axe"
    },
    {
      "item": "minecraft:iron_hoe"
    },
    {
      "item": "minecraft:iron_sword"
    },
    {
      "item": "minecraft:iron_helmet"
    },
    {
      "item": "minecraft:iron_chestplate"
    },
    {
      "item": "minecraft:iron_leggings"
    },
    {
      "item": "minecraft:iron_boots"
    },
    {
      "item": "minecraft:iron_horse_armor"
    },
    {
      "item": "minecraft:iron_ore"
    }
  ],
  "result": "minecraft:iron_nugget",
    "experience": 0.5,
    "cookingtime": 50
}

{
  "type": "smelting",
  "ingredient": [
    {
      "item": "minecraft:gold_pickaxe"
    },
    {
      "item": "minecraft:gold_shovel"
    },
    {
      "item": "minecraft:gold_axe"
    },
    {
      "item": "minecraft:gold_hoe"
    },
    {
      "item": "minecraft:gold_sword"
    },
    {
      "item": "minecraft:gold_helmet"
    },
    {
      "item": "minecraft:gold_chestplate"
    },
    {
      "item": "minecraft:gold_leggings"
    },
    {
      "item": "minecraft:gold_boots"
    },
    {
      "item": "minecraft:gold_horse_armor"
    },
    {
      "item": "minecraft:gold_ore"
    }
  ],
  "result": "minecraft:gold_nugget",
    "experience": 0.5,
    "cookingtime": 50
}