// API callback initMap to https://maps.googleapis.com/maps/api/js?key=[API_KEY]({ "error": { "code": 400, "message": "Invalid JSONP callback name: 'initMap to https://maps.googleapis.com/maps/api/js?key=[API_KEY]'; only alphabet, number, '_', '$', '.', '[' and ']' are allowed.", "status": "INVALID_ARGUMENT" } } );