{
  "id": "python/django-form-invalid-upload",
  "signature": "django.core.exceptions.ValidationError: ['The submitted file is empty.']",
  "signature_zh": "django.core.exceptions.ValidationError: ['提交的文件为空。']",
  "regex": "django\\.core\\.exceptions\\.ValidationError:\\ \\['The\\ submitted\\ file\\ is\\ empty\\.'\\]",
  "domain": "python",
  "category": "data_error",
  "subcategory": null,
  "root_cause": "FileField receives an empty file, often due to missing enctype in form or invalid file input.",
  "root_cause_type": "generic",
  "root_cause_zh": "FileField接收空文件，通常是由于表单缺少enctype或文件输入无效。",
  "versions": [
    {
      "version": "3.x",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "Loses functionality; users cannot upload files.",
      "fail_rate": 0.8,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "May return None or empty, still fails validation.",
      "fail_rate": 0.9,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "",
      "success_rate": 0.95,
      "how": "Ensure form has enctype=\"multipart/form-data\" in template.",
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "success_rate": 0.9,
      "how": "In view, check if 'file' in request.FILES and file.size > 0.",
      "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": 0.84,
  "fix_success_rate": 0.8,
  "resolvable": "true",
  "first_seen": "2024-03-28",
  "last_confirmed": "2025-01-01",
  "last_updated": "2025-01-01",
  "evidence_count": 0,
  "tags": [],
  "locale": "en",
  "aliases": []
}