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Error code 525 - Saving IMG - mapbox_style="open-street-map"

Hi everyone!

I’m trying to save a figure as follows:

import pandas as pd
us_cities = pd.read_csv("https://raw.githubusercontent.com/plotly/datasets/master/us-cities-top-1k.csv")

import plotly
import plotly.express as px

fig = px.scatter_mapbox(us_cities, lat="lat", lon="lon", hover_name="City", hover_data=["State", "Population"],
                        color_discrete_sequence=["fuchsia"], zoom=3, height=300)
fig.update_layout(mapbox_style="open-street-map")
fig.update_layout(margin={"r":0,"t":0,"l":0,"b":0})
#fig.show()

fig.write_image("test_map.png")

However, I’ve got the following error:

ValueError: Transform failed with error code 525: Mapbox error.

It only occurs when I set the mapbox_style param as open-street-map. The other options work just fine.

Best,