Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/ramassof/backup.ramas.dev/vendor/symfony/serializer/Tests/SerializerTest.php:90 Stack trace: #0 {main} thrown in /home/ramassof/backup.ramas.dev/vendor/symfony/serializer/Tests/SerializerTest.php on line 90