The leaflet frame in Location History Visualization Fails

[edglazer]

Great set of Jupyter notebooks!
I have a sticking point at the end of the visualize-location-history.ipynb notebook, where running the last cell just displays the zoom in/out for the apparent map frame. I can see it working on your website, as referenced at the end of the doc. However, looking at the console, the leaflet css and javascript throw errors. The .css throws an error about unsupported MIME type, but more importantly, the leaflet.js javascript and the location-dataset.js JSON data both throw 403 forbidden errors.

I don't know enough about Jupyter's security model to get why this is failing, but I'd love to see the results of the data chomping and visualization!

Thanks!

This is in Google Chrome 75.0.3770.100 on MacOS 10.13.6
Python version is 3.7.3, IPython 7.5.0, and Notebook Server 5.7.8.