This happens for me too on idoco.github.io/map-chat
I suspect that this is related the the changes google planed for Deprecating Powerful Features on Insecure Origins it seems that some changes were done in the last few days in this chromium Issue 520765: Deprecation and removal of powerful features on insecure origins
Can you test your site over https to confirm that?
In the meanwhile I found this api usage as a workaround on this repo:
$.getJSON("http://ipinfo.io", function(doc){
var latlong = doc.loc.split(",")
setUserLocation(parseFloat(latlong[0]), parseFloat(latlong[1]));
getLocation(parseFloat(latlong[0]), parseFloat(latlong[1])).then(function(res){
userLocationName = res
})
initialiseEventBus();
map.panTo(userLocation);
}, function(err) {
setUserLocation(Math.random()*50, Math.random()*60);
userLocationName = "unknown.na"
initialiseEventBus();
map.panTo(userLocation);
})