Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in E:\xampp\htdocs\www\yunwei\qr2500\vendor\symfony\translation\Test\ProviderTestCase.php:29 Stack trace: #0 {main} thrown in E:\xampp\htdocs\www\yunwei\qr2500\vendor\symfony\translation\Test\ProviderTestCase.php on line 29