Advancement Background not appearing

  "display": {
    "icon": {
      "id": "minecraft:blue_dye",
      "count": 1
    },
    "title": "Mana",
    "description": "Unlocked Mana",
    "background": "mana",
    "frame": "challenge",
    "show_toast": true,
    "announce_to_chat": false,
    "hidden": false
  },
  "criteria": {
    "join": {
      "trigger": "minecraft:tick",
      "conditions": {
        "player": {
          "type": "minecraft:player",
          "location": {
            "dimension": "minecraft:overworld"
          },
          "periodic_tick": 20
        }
      }
    }
  },
  "requirements": [
    [
      "join"
    ]
  ],
  "sends_telemetry_event": false
}```