Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in C:\xampp\htdocs\print-bk\vendor\symfony\http-kernel\Tests\EventListener\TestSessionListenerTest.php:31 Stack trace: #0 {main} thrown in C:\xampp\htdocs\print-bk\vendor\symfony\http-kernel\Tests\EventListener\TestSessionListenerTest.php on line 31