python config_error ai_generated true

werkzeug.exceptions.NotFound: 404 Not Found: The requested URL was not found on the server

ID: python/flask-static-file-not-found

Also available as: JSON · Markdown · 中文
80%Fix Rate
87%Confidence
0Evidence
2024-04-05First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
3.x active — — —

Root Cause

Flask cannot find a static file because the file is missing or the URL path is incorrect.

generic

中文

Flask找不到静态文件，因为文件缺失或URL路径错误。

Workarounds

  1. 95% success Place the file in the 'static' folder and use correct URL 
    mkdir static
mv style.css static/
# Access via /static/style.css
  2. 90% success Configure custom static folder 
    app = Flask(__name__, static_folder='assets')

Dead Ends

Common approaches that don't work:

  1. Placing static files in the templates folder 80% fail

    Flask serves static files from a 'static' folder by default.

  2. Using absolute path in the URL 75% fail

    Flask expects relative paths from the static folder.