Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/amper418/shopv2.amperio.ch/vendor/symfony/messenger/Test/Middleware/MiddlewareTestCase.php:23 Stack trace: #0 {main} thrown in /home/amper418/shopv2.amperio.ch/vendor/symfony/messenger/Test/Middleware/MiddlewareTestCase.php on line 23