{
  "id": "python/flask-url-for-external-error",
  "signature": "werkzeug.routing.exceptions.BuildError: Could not build url for endpoint 'external'",
  "signature_zh": "路由错误：无法为端点 'external' 构建 URL。",
  "regex": "werkzeug\\.routing\\.exceptions\\.BuildError:\\ Could\\ not\\ build\\ url\\ for\\ endpoint\\ 'external'",
  "domain": "python",
  "category": "config_error",
  "subcategory": null,
  "root_cause": "尝试为外部端点构建 URL，但该端点未注册或未定义。",
  "root_cause_type": "generic",
  "root_cause_zh": "尝试为外部端点构建 URL，但该端点未注册或未定义。",
  "versions": [
    {
      "version": "3.x",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "在 `url_for` 中使用了错误的端点名称，例如拼写错误或未包含蓝图前缀。",
      "fail_rate": 0.7,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "尝试为外部服务构建 URL，但未使用 `_external=True` 参数。",
      "fail_rate": 0.5,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "",
      "success_rate": 0.9,
      "how": "正确使用 `url_for('external_endpoint')`，确保端点已定义且导入。",
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "success_rate": 0.85,
      "how": "对于外部 URL，使用 `url_for('endpoint', _external=True)` 生成绝对 URL。",
      "condition": "",
      "sources": []
    }
  ],
  "workarounds_zh": [],
  "transition_graph": {
    "leads_to": [],
    "preceded_by": [],
    "frequently_confused_with": []
  },
  "official_doc_url": null,
  "official_doc_section": null,
  "error_code": null,
  "verification_tier": "ai_generated",
  "confidence": 0.82,
  "fix_success_rate": 0.8,
  "resolvable": "true",
  "first_seen": "2025-04-12",
  "last_confirmed": "2025-01-01",
  "last_updated": "2025-01-01",
  "evidence_count": 0,
  "tags": [],
  "locale": "en",
  "aliases": []
}