data pack validation error with custom enchant

Hello everyone. I haven't touched the databases in like 3 years and now that I saw the possibility of creating enchant I decided to give it a try. Unfortunately it gives me a validation error and I don't understand why. I even checked the logs but it seems too generic.
essence_extractor.json
{
  "description": "Essence Extractor",
  "exclusive_set": [
    "minecraft:looting",
    "minecraft:mending"
  ],
  "supported_items": "#minecraft:enchantable/sword",
  "weight": 1,
  "max_level": 2,
  "min_cost": {
    "base": 20,
    "per_level_above_first": 14
  },
  "max_cost": {
    "base": 70,
    "per_level_above_first": 14
  },
  "anvil_cost": 6,
  "slots": [
    "hand"
  ],
  "effects": {
    "minecraft:mob_experience": [
      {
        "effect": {
          "type": "minecraft:multiply",
          "factor": 1.5
        },
        "requirements": {
          "condition": "minecraft:entity_properties",
          "entity": "attacker",
          "predicate": {
            "type": "minecraft:player"
          }
        }
      }
    ]
  }
}

looting.json
{
  "description": {
    "translate": "enchantment.minecraft.looting"
  },
  "exclusive_set": "p_ench:essence_extractor",
  "supported_items": "#minecraft:enchantable/sword",
  "weight": 2,
  "max_level": 3,
  "min_cost": {
    "base": 15,
    "per_level_above_first": 9
  },
  "max_cost": {
    "base": 65,
    "per_level_above_first": 9
  },
  "anvil_cost": 4,
  "slots": [
    "mainhand"
  ],
  "effects": {
    "minecraft:equipment_drops": [
      {
        "enchanted": "attacker",
        "effect": {
          "type": "minecraft:add",
          "value": {
            "type": "minecraft:linear",
            "base": 0.01,
            "per_level_above_first": 0.01
          }
        },
        "requirements": {
          "condition": "minecraft:entity_properties",
          "entity": "attacker",
          "predicate": {
            "type": "minecraft:player"
          }
        }
      }
    ]
  }
}

mending.json
{
  "description": {
    "translate": "enchantment.minecraft.mending"
  },
  "exclusive_set": "p_ench:essence_extractor",
  "supported_items": "#minecraft:enchantable/durability",
  "weight": 2,
  "max_level": 1,
  "min_cost": {
    "base": 25,
    "per_level_above_first": 25
  },
  "max_cost": {
    "base": 75,
    "per_level_above_first": 25
  },
  "anvil_cost": 4,
  "slots": [
    "any"
  ],
  "effects": {
    "minecraft:repair_with_xp": [
      {
        "effect": {
          "type": "minecraft:multiply",
          "factor": 2
        }
      }
    ]
  }
}

Latest log and folders are here: