TypeError: Dash() got an unexpected keyword argument 'on_error'

Dash Python
1

Hello Team,
I have a Flask-Dash application and I am trying to define a global exception handler to catch and log any unhandled exceptions as per guidance in this article

app = Dash(on_error=custom_error_handler)

But, this gives me the following error:

  File "xxxxx\oil-webapp\.venv\lib\site-packages\dash\_validate.py", line 360, in check_obsolete
    raise TypeError(f"Dash() got an unexpected keyword argument '{key}'")
TypeError: Dash() got an unexpected keyword argument 'on_error'

Any suggestions ?

Thanks,
Sau

2

Hi @sau001

What version of dash are you using?

3

Hello @AnnMarieW ,
We are on dash==3.0.0

Thanks,
Sau