Callback problem

Dash Python
1

Hi All,
I’m getting KeyError msg as below. this keeps comming even if I dismiss all callbacks…
any suggestion where to look for? spelling is also fine for this id…if my thinking is correct if no active callback no error msg should come
thanks in advance

KeyError: "Callback function not found for output 'grid-kellner-wyceny.rowData', perhaps you forgot to prepend the '@'?"
127.0.0.1 - - [25/Nov/2023 23:58:43] "POST /_dash-update-component HTTP/1.1" 500 -
[2023-11-25 23:58:53,168] ERROR in app: Exception on /_dash-update-component [POST]
Traceback (most recent call last):
  File "C:\Users\aroma\google\pythonProjects\fakturowanie\venv\lib\site-packages\dash\dash.py", line 1242, in dispatch
    cb = self.callback_map[output]
2

Hi @acidkans

Be sure that the callback starts with an @

@app.callback(....

or

@callback(...
2 Likes
3

Hi yes it is.
I had to restart whole app…now is fine…
seems like when I edit callback some settings are not being refreshed and app is seeing something that is already gone…
case closed…

4

Note that you may need to reload the page. This solved my issue.