Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in C:\xampp\htdocs\dpbb\vendor\bacon\bacon-qr-code\test\Common\ModeTest.php:9 Stack trace: #0 {main} thrown in C:\xampp\htdocs\dpbb\vendor\bacon\bacon-qr-code\test\Common\ModeTest.php on line 9