{
  "id": "python/flask-url-for-external-https",
  "signature": "werkzeug.routing.exceptions.BuildError: Could not build url for endpoint 'static' with values ['filename']. Did you forget to specify values ['filename']?",
  "signature_zh": "werkzeug.routing.exceptions.BuildError: 无法为端点 'static' 构建 url，值 ['filename']。是否忘记指定值 ['filename']？",
  "regex": "werkzeug\\.routing\\.exceptions\\.BuildError:\\ Could\\ not\\ build\\ url\\ for\\ endpoint\\ 'static'\\ with\\ values\\ \\['filename'\\]\\.\\ Did\\ you\\ forget\\ to\\ specify\\ values\\ \\['filename'\\]\\?",
  "domain": "python",
  "category": "runtime_error",
  "subcategory": null,
  "root_cause": "url_for('static', ...) was called without the required filename argument, or the endpoint name was misspelled.",
  "root_cause_type": "generic",
  "root_cause_zh": "调用 url_for('static', ...) 时未提供必需的 filename 参数，或端点名称拼写错误。",
  "versions": [
    {
      "version": "3.x",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "Breaks asset links; static files 404 in production.",
      "fail_rate": 0.85,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "Ignores url_prefix and CDN configuration.",
      "fail_rate": 0.7,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "",
      "success_rate": 0.98,
      "how": "url_for('static', filename='css/app.css')",
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "success_rate": 0.85,
      "how": "print([r.endpoint for r in app.url_map.iter_rules()])",
      "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": 0.88,
  "fix_success_rate": 0.8,
  "resolvable": "true",
  "first_seen": "2024-06-15",
  "last_confirmed": "2025-01-01",
  "last_updated": "2025-01-01",
  "evidence_count": 0,
  "tags": [],
  "locale": "en",
  "aliases": []
}