Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in C:\laragon\www\bc-game-updown\backend\vendor\react\event-loop\tests\TestCase.php:8 Stack trace: #0 {main} thrown in C:\laragon\www\bc-game-updown\backend\vendor\react\event-loop\tests\TestCase.php on line 8