How to generate my key for Google Maps

To display the geographic map a key is necessary for the use of
the Google API
Follow these steps to get a key:

• Go to the API Console – Google Cloud Platform.
• Identify yourself or create an account with Google.
• Select a project or create a new one if you wish.
• Click on 'Activate APIs and Services' at the top left and
  select the Maps Javascript API API.
• If you checked the address verification also check the Geocoding API
• If you plan to use the mobile application also check the
  Distance Matrix API and Directions API
• Go to 'Creditentials' on the left menu then click on 'Create identifiers' > 'API key' to get the key
• Finally you just have to copy the key then paste it in the module configuration

If despite all this you have a message over the map: 'Unable to load Google Maps on this page' then you may have an error message given by Google.
You can see it by right clicking on the page and then ‘ inspect the element ‘.
The most common is: 'You must enable Billing on the Google Cloud Project at https://console.cloud.google.com/project/_/billing/enable Learn more at https://developers.google.com/maps/gmp-get-started.' Which means Google asks you to fill in the payment information.