[Google Maps] Google map says "Oops something went wrong."

I have updated everything and tried everything.
Please tell me why the Google Maps in the right column of my event pages say "Oops Something went wrong."
I have a good Google Maps API key inserted in the Google Maps settings, and the API referrers set to HTTP(web sites) and then two listed as highlandlakesaggies.com/* and *highlandlakesaggies.com/*

The maps should be displaying perfectly.

Please tell me what the magic secret is to get the maps to display properly. I have been working on this for 5-6 hours.

http://www.highlandlakesaggies.com/events/2019/04/2019-aggie-muster/

Thanks. Scott