I can not view geo-map ( i use free-edition)

Using the "Geocode" function of the "recipes" feature, an external API was used to add the latitude and longitude items.
In addition, we will use "GeoPoint" to change to map data. The documentation says that by doing this, you can use "charts" to visualize the data using a map.
I added a geo-point column. On the subsequent New chart screen

"Please select geographic columns to show".

However, I cannot select the "geo" list.
Please tell me why I cannot select it!

Operating system used: ubuntu