On some domains Google Maps returns instead of image this error message: The Google Maps Platform server rejected your request. You must use an API key to authenticate each request to Google Maps Platform APIs. For additional information, please refer to http://g.co/dev/maps-no-account
Domains where it does not work:
Domains where it works:
The image I display on web is from http://maps.googleapis.com/maps/api/staticmap URL. It is Google Maps Stati API https://developers.google.com/maps/documentation/maps-static/intro
Why on some domains it works and some not? If it wil not work for any domain, then I think I need to add "key=YOUR_API_KEY" parameter.
I spent many hours trying to find out the reason, but did not succeeded. Any help is very welcome.