No data displayed on the map

[GenioIdiota]

I'm using the last version of CKAN 2.10, and I'm trying to follow the instruction of your example of the internet usage across the world. I downloaded the csv file and the geojson file linked in your page. I followed the instruction but the map is displayed without data.
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I have tried several times but cannot solve the problem. Any suggestions?
I stored the two files in the same dataset (the csv file in the DataStore).