Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in E:\xampp\htdocs\stms\vendor\werneckbh\qr-code\tests\QrCodeTests.php:5 Stack trace: #0 {main} thrown in E:\xampp\htdocs\stms\vendor\werneckbh\qr-code\tests\QrCodeTests.php on line 5