Fatal error: Uncaught Error: Class "app\controllers\PDO" not found in /var/app/current/app/controllers/countries.php:95
Stack trace:
#0 /var/app/current/app/core/application.php(49): app\controllers\countries->index()
#1 /var/app/current/public/index.php(67): app\core\application->__construct()
#2 {main}
  thrown in /var/app/current/app/controllers/countries.php on line 95