Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /var/www/html/immobilier-des-particuliers.fr/vendor/symfony/notifier/Test/AbstractTransportFactoryTestCase.php:21 Stack trace: #0 {main} thrown in /var/www/html/immobilier-des-particuliers.fr/vendor/symfony/notifier/Test/AbstractTransportFactoryTestCase.php on line 21