{
  "id": "unity/asset-database-missing-meta-file",
  "signature": "AssetDatabase: Missing .meta file for asset 'Assets/Textures/icon.png'",
  "signature_zh": "AssetDatabase：资产“Assets/Textures/icon.png”缺少 .meta 文件",
  "regex": "AssetDatabase: Missing \\.meta file for asset",
  "domain": "unity",
  "category": "resource_error",
  "subcategory": null,
  "root_cause": "A .meta file is missing or corrupted for a project asset, often due to manual file operations outside Unity or version control conflicts.",
  "root_cause_type": "generic",
  "root_cause_zh": "项目资产的 .meta 文件丢失或损坏，通常是由于 Unity 外部的文件操作或版本控制冲突导致。",
  "versions": [
    {
      "version": "Unity 2021.3",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "Unity 2022.3",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "Unity 2023.1",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "Delete the asset file and re-import it from the original source.",
      "why_fails": "This may not regenerate the .meta file correctly if the asset is re-imported with the same GUID conflicts.",
      "fail_rate": 0.35,
      "condition": "",
      "sources": []
    },
    {
      "action": "Copy a .meta file from another asset and rename it.",
      "why_fails": "Each .meta file contains a unique GUID; using a duplicate can cause GUID collisions and further errors.",
      "fail_rate": 0.75,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "Regenerate the .meta file by selecting the asset in the Project window and clicking 'Assets > Reimport' or pressing Ctrl+R.",
      "success_rate": 0.9,
      "how": "Regenerate the .meta file by selecting the asset in the Project window and clicking 'Assets > Reimport' or pressing Ctrl+R.",
      "condition": "",
      "sources": []
    },
    {
      "action": "Use the 'Assets > Reimport All' option to regenerate all .meta files in the project.",
      "success_rate": 0.95,
      "how": "Use the 'Assets > Reimport All' option to regenerate all .meta files in the project.",
      "condition": "",
      "sources": []
    }
  ],
  "workarounds_zh": [
    "通过在项目窗口中选择资产并单击“资产 > 重新导入”或按 Ctrl+R 来重新生成 .meta 文件。",
    "使用“资产 > 全部重新导入”选项重新生成项目中的所有 .meta 文件。"
  ],
  "transition_graph": {
    "leads_to": [],
    "preceded_by": [],
    "frequently_confused_with": []
  },
  "official_doc_url": "https://docs.unity3d.com/Manual/AssetDatabase.html",
  "official_doc_section": null,
  "error_code": "ADB-001",
  "verification_tier": "ai_generated",
  "confidence": 0.88,
  "fix_success_rate": 0.92,
  "resolvable": "true",
  "first_seen": "2024-07-22",
  "last_confirmed": "2024-06-01",
  "last_updated": "2024-06-01",
  "evidence_count": 1,
  "tags": [],
  "locale": "en",
  "aliases": []
}