When this problem occurs, a popup from Google Maps shows the location error message "This page can't load Google Maps correctly" and the background shows a watermark text "For development purposes only".
Steps to Reproduce
Open a form that displays Google maps, for example Critical Incidents.
Notice the error shown as in the screenshot below:
This problem is under investigation. As a workaround, create the new system property google.maps.map_page_version and set the value to "helsinki":
Google Map system properties settings: https://docs.servicenow.com/bundle/london-platform-administration/page/administer/navigation-and-ui/task/set-up-google-maps-api.html
See also the related problem PRB1235648: On Google Map integration, client ID and channel parameters are not passed
Related Problem: PRB1308602