Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in E:\xampp\htdocs\www\yunwei\qr250\vendor\bacon\bacon-qr-code\test\Common\BitArrayTest.php:10 Stack trace: #0 {main} thrown in E:\xampp\htdocs\www\yunwei\qr250\vendor\bacon\bacon-qr-code\test\Common\BitArrayTest.php on line 10