Fatal error: Uncaught Error: Class "Symfony\Component\Notifier\Exception\RuntimeException" not found in /var/www/html/immobilier-des-particuliers.fr/vendor/symfony/notifier/Exception/TransportException.php:19 Stack trace: #0 {main} thrown in /var/www/html/immobilier-des-particuliers.fr/vendor/symfony/notifier/Exception/TransportException.php on line 19