Sunburst data is different for Chart Studio than for Plotly.express?

Hi,

Can you tell me why does the Chart Studio Sunburst need Parents and ID data to be combined (hyphenated) data fields? This is not a requirement of plotly.express

I get a plotly.express sunburst without using combined fields; and yet chart studio does not create the plot when I use data that works with plotly.express

Plotly Express accepts -

fig = px.sunburst(df2, path=[‘topic’,‘subtopic1’,‘desc’], values=‘score’, maxdepth=2, hover_data = [‘code’], hover_name = “http://csq1.org/info/” + df2[‘code’]+".htm")
fig.show()

Here is what Chart Studio works with: