{
  "id": "python/starlette-uvicorn-invalid-env",
  "signature": "pydantic_settings.exceptions.SettingsError: error parsing value for field \"DATABASE_URL\" from source \"EnvSettingsSource\"",
  "signature_zh": "pydantic_settings.exceptions.SettingsError: 从源 \"EnvSettingsSource\" 解析字段 \"DATABASE_URL\" 的值时出错",
  "regex": "pydantic_settings\\.exceptions\\.SettingsError:\\ error\\ parsing\\ value\\ for\\ field\\ \"DATABASE_URL\"\\ from\\ source\\ \"EnvSettingsSource\"",
  "domain": "python",
  "category": "config_error",
  "subcategory": null,
  "root_cause": "A Pydantic BaseSettings field expects a URL/int/bool but the environment variable is malformed or empty.",
  "root_cause_type": "generic",
  "root_cause_zh": "Pydantic BaseSettings 字段期望 URL/int/bool，但环境变量格式错误或为空。",
  "versions": [
    {
      "version": "3.x",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "Downstream code receives None and fails at connect time.",
      "fail_rate": 0.8,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "Silently connects to the wrong database.",
      "fail_rate": 0.85,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "",
      "success_rate": 0.92,
      "how": "from pydantic import PostgresDsn\nclass Settings(BaseSettings):\n    database_url: PostgresDsn",
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "success_rate": 0.95,
      "how": "export DATABASE_URL='postgresql://user:pass@localhost:5432/db'",
      "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": 0.83,
  "fix_success_rate": 0.8,
  "resolvable": "true",
  "first_seen": "2024-09-04",
  "last_confirmed": "2025-01-01",
  "last_updated": "2025-01-01",
  "evidence_count": 0,
  "tags": [],
  "locale": "en",
  "aliases": []
}