python config_error ai_generated true

werkzeug.exceptions.RequestEntityTooLarge: 413 Request Entity Too Large

ID: python/flask-request-entity-too-large-413

Also available as: JSON · Markdown · 中文
80%Fix Rate
88%Confidence
0Evidence
2024-05-08First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
2.x active — — —
3.x active — — —

Root Cause

Uploaded payload exceeds MAX_CONTENT_LENGTH configured in Flask.

generic

中文

上传的载荷超过了Flask中配置的MAX_CONTENT_LENGTH。

Workarounds

  1. 95% success 
    app.config['MAX_CONTENT_LENGTH'] = 50 * 1024 * 1024  # 50 MB
  2. 90% success 
    f = request.files['file']\nf.save('/tmp/upload.bin')

Dead Ends

Common approaches that don't work:

  1. 60% fail

    Disables limit globally; DoS risk and reverse proxy may still block.

  2. 80% fail

    Body already truncated; client retries and fails again.