Google Maps reports need API key in 7.2
31 August, 2016

The browsers javascript console shows this error;

The error at the top of the console seems to indicate that a google maps API key is required. Yet everything I have read about 7.2 seems to indicate a google maps api key is not required ?
This error is on our linux install of Yellowfin. Yellowfin for windows hosted on my laptop does not get this error.
Interestingly, my windows install has a field for a google maps api key.

(But if I remove that key, google maps still works on my local windows Yellowfin.)
The Linux install has no field for Google Maps API Key.

So my questions are;
1) Is a google maps API key required in 7.2 ?
2) If not, why do I get this error when attempting to create a google map ?
3) If required, how do I enter it ?
The system properties of the linux install getting the problem are;
System Information
Application Version: 7.2
Build: 20160331
Java Version: 1.7.0_07
Operating System: Linux 2.6.32-431.el6.x86_64 (amd64)
My windows install where google map sis working has this system info;
System Information
Application Version: 7.2
Build: 20160728
Java Version: 1.7.0_79
Operating System: Windows 8.1 6.3 (x86)