Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in C:\xampp\htdocs\print\vendor\symfony\http-kernel\Tests\EventListener\DebugHandlersListenerTest.php:34 Stack trace: #0 {main} thrown in C:\xampp\htdocs\print\vendor\symfony\http-kernel\Tests\EventListener\DebugHandlersListenerTest.php on line 34