python runtime_error ai_generated true

werkzeug.routing.exceptions.BuildError: Could not build url for endpoint 'user_profile'. Did you mean 'user' instead?

ID: python/flask-build-error-endpoint

Also available as: JSON · Markdown · 中文
80%Fix Rate
88%Confidence
0Evidence
2024-02-27First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
3.x active — — —

Root Cause

url_for() references an endpoint name that does not exist or is misspelled relative to the registered view function name.

generic

中文

url_for() 引用的端点名称不存在，或与注册的视图函数名称拼写不一致。

Workarounds

  1. 95% success 
    @app.route('/profile')
def user_profile(): ...
url_for('user_profile')
  2. 90% success 
    print(app.url_map)

Dead Ends

Common approaches that don't work:

  1. 70% fail

    Breaks on app mounted under a prefix or behind a proxy; loses url_for's escaping.

  2. 85% fail

    Unrelated to endpoint name resolution.