Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/ramassof/backup.ramas.dev/vendor/symfony/http-foundation/Tests/HeaderUtilsTest.php:18 Stack trace: #0 {main} thrown in /home/ramassof/backup.ramas.dev/vendor/symfony/http-foundation/Tests/HeaderUtilsTest.php on line 18