Fatal error: Uncaught Error: Class "Symfony\Component\Notifier\Exception\LogicException" not found in /var/www/html/immobilier-des-particuliers.fr/vendor/symfony/notifier/Exception/FlashMessageImportanceMapperException.php:17 Stack trace: #0 {main} thrown in /var/www/html/immobilier-des-particuliers.fr/vendor/symfony/notifier/Exception/FlashMessageImportanceMapperException.php on line 17