Error in graphgists example - Interpreting Citation Patterns

Hi, I was exploring the example graphgists on the website and there seems to be an issue with the following example:

The example queries are empty:

Am I doing something wrong or is there an issue on the website?

Thanks,
Anna

Seems to be a wider problem e.g. the example here is completely invisible (Northwind Recommendation Engine - graphgists)

I've tried Chrome/Firefox but it's the same for both. Is someone aware of this?