GOOGLE MAPS NOT WORKING

Hi i purchased enfold theme (4.1.2) and now i’m using a child version.
I can’t show goggle maps with layout editor editor in contact page http://ercolanicoperture.it/contatti/

Google api key is ok .
I also added this code in funtions.php as you suggested in a post, But still not works

function ava_googlemaps_apikey() {
$prefix = is_ssl() ? “https” : “http”;
wp_deregister_script(‘avia-google-maps-api’);
wp_register_script( ‘avia-google-maps-api’, $prefix.’://maps.google.com/maps/api/js?key=AIzaSyAidX34J-pkIHmOUFdVrt05MpzDHz-VZUk’, array(‘jquery’), ‘3’, true);
wp_enqueue_script(‘avia-google-maps-api’);
}
add_action(‘init’, ‘ava_googlemaps_apikey’);