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[BUG] Error loading dependencies #2797
Description
Describe your context
dash 2.16.1
dash-bootstrap-components 1.5.0
dash-core-components 2.0.0
dash-daq 0.5.0
dash-html-components 2.0.0
dash-iconify 0.1.2
dash-mantine-components 0.12.1
dash-table 5.0.0
-
if frontend related, tell us your Browser, Version and OS
- OS: Windows
- Browser Chrome
Describe the bug
I run this example app:
# Run this app with `python app.py` and
# visit http://127.0.0.1:8050/ in your web browser.
from dash import Dash, dcc, html
import plotly.express as px
import pandas as pd
app = Dash(__name__)
colors = {
'background': '#111111',
'text': '#7FDBFF'
}
# assume you have a "long-form" data frame
# see https://plotly.com/python/px-arguments/ for more options
df = pd.DataFrame({
"Fruit": ["Apples", "Oranges", "Bananas", "Apples", "Oranges", "Bananas"],
"Amount": [4, 1, 2, 2, 4, 5],
"City": ["SF", "SF", "SF", "Montreal", "Montreal", "Montreal"]
})
fig = px.bar(df, x="Fruit", y="Amount", color="City", barmode="group")
fig.update_layout(
plot_bgcolor=colors['background'],
paper_bgcolor=colors['background'],
font_color=colors['text']
)
app.layout = html.Div(style={'backgroundColor': colors['background']}, children=[
html.H1(
children='Hello Dash',
style={
'textAlign': 'center',
'color': colors['text']
}
),
html.Div(children='Dash: A web application framework for your data.', style={
'textAlign': 'center',
'color': colors['text']
}),
dcc.Graph(
id='example-graph-2',
figure=fig
)
])
if __name__ == '__main__':
app.run(debug=True)On startup, the app loads fine.
When I change something in my code, and the page reloads in the browser, I get the following error:
If I refresh the browser, the app loads again without problems.
This happens after upgrading my dash version, so could be related to a bug in the later versions.
Expected behavior
The page should reload without problems with debug=True.
Screenshots
See above
Activity
WWakker commentedon Mar 15, 2024
Update, when I downgrade to
dash==2.15.0it works fine. With2.16.0it fails again.AnnMarieW commentedon Mar 15, 2024
@WWakker This was fixed in 2.16.1
WWakker commentedon Mar 15, 2024
@AnnMarieW I'm afraid I'm still experiencing the issue with 2.16.1
T4rk1n commentedon Mar 15, 2024
It's a bug with newer version of orjson, dependencies now calls to_json for
runningto set components. When reloading the import on plotly.py seems to fail.Can uninstall orjson or
import orjsonat the top.Related to: plotly/plotly.py#3567
WWakker commentedon Mar 18, 2024
I confirm this, glad that it's not related to Dash
Coding-with-Adam commentedon Mar 18, 2024
Closing this because the issue is in Plotly.py
emilykl commentedon Apr 15, 2024
This issue should be resolved by the next Plotly.py release, now that the above linked PR has been merged.