Hi,
I have the same problem. I have checked the troubleshooting guide (thank you! @nicolaskruchten) but unfortunately could not fix the problem.
I am on macOS Catalina (10.15.3), Firefox 73.01, with the following installed:
$ jupyter --version
jupyter core : 4.6.1
jupyter-notebook : 6.0.1
qtconsole : not installed
ipython : 7.11.1
ipykernel : 5.1.3
jupyter client : 5.3.3
jupyter lab : 1.2.4
nbconvert : 5.6.1
ipywidgets : 7.5.1
nbformat : 5.0.3
traitlets : 4.3.3
[Also plotly.version is ‘4.5.2’ ]
As a test, i have tried to run the code here: https://plot.ly/python/graphing-multiple-chart-types/
but all I get is a big blank space.
All help welcome!