Google Maps notices when using OpenStreetMap

OpenStreetMap is set as the map provider, but the Event Details section still says, “Google Maps now requires you register for an API key. If you wish to use maps on your site, please enter your key.” and after saving a venue, an error message appears at the top of the page: “Enter a Google Maps API key. Google Maps now requires you register for an API key. If you wish to use maps on your site, please enter your key.”