Google index api hata

$s = $_GET['u'];

require_once 'google-api-php-client/vendor/autoload.php';

$client = new Google_Client();

// service_account_file.json is the private key that you created for your service account.
$client->setAuthConfig('localindexingapi-8c.json');
$client->addScope('https://www.googleapis.com/auth/indexing');

// Get a Guzzle HTTP Client
$httpClient = $client->authorize();
$endpoint = 'https://indexing.googleapis.com/v3/urlNotifications:publish';

// Define contents here. The structure of the content is described in the next step.
$content = '{
  "url": "$s",
  "type": "URL_UPDATED"
}';

$response = $httpClient->post($endpoint, [ 'body' => $content ]);
$status_code = $response->getStatusCode();

//print_r($response);
echo "\n";
echo "$status_code";

 "url": "$s",

  "url": "http://site.domain",

$content = '{
  "url": "'.$s.'",
  "type": "URL_UPDATED"
}';