Failed to load script: No map loaded error
When loading the map, Google maps gives an error: No map loaded Failed to load script at http...
This issue is caused by a firewall or a web proxy when the server is behind a strict firewall that does not allow all outgoing traffic to the Internet.
Open chrome and press F12. Reload the browser page where you can see the error as in the image above.
The browser's console will show you which pages it's trying to reach and which pages it's unable to access.