Thank you so much for helping improve the quality of Dash!
We do our best to catch bugs during the release process, but we rely on your help to find the ones that slip through.
Describe your context
-
pip list | grep dash
below
dash 2.9.3
dash-ag-grid 2.0.0a4
dash-bootstrap-components 1.4.0
dash-core-components 2.0.0
dash-design-kit 1.6.8
dash-enterprise-auth 0.0.5
dash-html-components 2.0.0
dash-iconify 0.1.2
dash-mantine-components 0.12.1
dash-snapshots 2.2.0
dash-table 5.0.0
Describe the bug
Passing a function as an argument (by mistake) causes an “Error Loading Layout” on the webpage with no description of the error.
example code:
import dash
from dash import dcc, html, Input, Output, State
app = dash.Dash()
def example_fun():
return
server = app.server
app.layout = html.Div([dcc.Graph(figure=example_fun)]) # should be example_fun()
if __name__ == "__main__":
app.run_server(debug=True, port=8050)
Expected behavior
There should be a more descriptive error message such as “functions not supported as arguments”