Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in C:\xampp\htdocs\retrodex\helpdesk\vendor\symfony\framework-bundle\Test\KernelTestCase.php:25 Stack trace: #0 {main} thrown in C:\xampp\htdocs\retrodex\helpdesk\vendor\symfony\framework-bundle\Test\KernelTestCase.php on line 25