Having the same issue as @perrydc
We are using the documentation recommended change and hard-coding our api key but getting the NoApiKeys error in the console.
This has been added to my theme’s functions.php file
/** Google Map API Key for place lookup */
function my_acf_google_map_api( $api ){
$api['key'] = 'zzzzzz'; /* my key is here */
return $api;
}
add_filter('acf/fields/google_map/api', 'my_acf_google_map_api');