Topic on Extension talk:GeoData/Flow

I've included several places with GPS coordinates in my page using Template:Coord. I've installed the extension GeoData.

When I include {{GeoGroup|mapframe=yes}} in my page, all I get is the output code of the template, not an actual map.

"<mapframe height="200" frameless="1" align="center" width="290">[

{"type":"Feature","geometry":{"coordinates":[-1.777979999999999893844915277441032230854034423828125,55.56616999999999961801222525537014007568359375],"type":"Point"},"properties":{"description":"55.56617°N 1.77798°W","title":"Adderstone Hall","marker-color":"5E74F3"}}," etc. appears on the screen.

I'm not getting any notification that I'm missing any templates or modules. When I put the same code into my sandbox on Wikipedia, it works fine.

I feel like the missing piece is that my install of mediawiki needs access to data in Wikibase, but I'm not sure if I need it locally or if I can query from wikidata. I have Wikibase installed, but I'm not sure what exactly to do with it.

Can someone just give me a next step so I know what I need to research. Thanks.

I understand now that I need the Kartographer extension. I've installed that along with the JsonConfig extension, but there doesn't seem to be any way to get them working on my own Mediawiki install.