Map not loading correctly after restoring from Updraft

After restoring/migrating our site using Updraft, the map has stop loading correctly.

The map loads briefly, and the markers appear correctly, but when the page finishes I get the gray “Oops! something went wrong” overlay.

Live link below:
http://goo.gl/3YjhvU

I have previously migrated and the map loaded without issue.

I have updated the Google API key.

Thanks

https://wordpress.org/plugins/leaflet-maps-marker/