Can anyone understand why I do not get a map here?
<mapframe width=500 height=500 zoom=6 longitude=23.6 latitude=38>
{
"type": "ExternalData",
"service": "geoshape",
"query": "
SELECT ?item ?coord ?Natura_2000_site_ID WHERE {
?item wdt:P3425 ?Natura_2000_site_ID.
?item wdt:P17 wd:Q41.
?item wdt:P625 ?coord.
}
"}
</mapframe>
In fact, not only the map fails, but also the interface! (no links to external maps etc.)