Calendar Cannot Reproduce Unable to apply location filter

[Mouth]

/events/?layout=list
Filters
Events within xx km of <Location>

Oops! We ran into some problems.
An error occurred while attempt to apply the requested location filter.

/events/?layout=list&location_boundary[location]=Melbourne%2C+Vic&location_boundary[distance]=25&location_boundary[distance_unit]=km\

API Key entered (and correct)
Enable auto completion for event locations ticked

 

[Naz]

This means Google kicked back an error of some sort. If you enable debug mode for yourself, it'll get logged and that'll probably be of more use.

 

[Mouth]

This means Google kicked back an error of some sort. If you enable debug mode for yourself, it'll get logged and that'll probably be of more use.

object(stdClass)#475 (3) {
["error_message"] => string(64) "API keys with referer restrictions cannot be used with this API."
["results"] => array(0) {
}
["status"] => string(14) "REQUEST_DENIED"
}

and/or

Google Maps Platform rejected your request. This IP, site or mobile application is not authorized to use this API key. Request received from IP address 2403:<redacted>:b5ff:3294, with referer: https://mysite.com/events/weekly-ride-tuesday-nights-from-rydalmere.2742/

We really need to be able to define seperate Google Maps API's @ /admin.php?options/groups/nfCalendar/

API Keys Best Practices tells us to protect and restrict keys using IP Addresses or HTTP Referrer restrictions. As the calendar uses both web server (Filter | Events within location) and browser referrer (map embed) we cannot use the same API key and have best practice restriction active. With only a single API key, restrictions have to be disable (strong security and $$ issue) to work correctly.