I have a custom set of locations on Google maps, at https://mapsengine.google.com/map/edit?mid=zzX-BuFGi82s.kBQeXTGL4SqY . When I try to embed this in an iframe, I get the following console error:
Refused to display '[URL]' in a frame because it set 'X-Frame-Options' to 'SAMEORIGIN'.
This StackOverflow question explains what's happening, and Q Studio's answer says adding &output=embed to a Google Maps link generally solves it. But it doesn't with the above URL, presumably because it's at mapsengine.google.com rather than maps.google.com. How can I make this work? I can get admin access to the original map's location dataset.