Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/app/htdocs/v2.2.3/vendor/endroid/qr-code/tests/QrCodeTest.php:20 Stack trace: #0 {main} thrown in /home/app/htdocs/v2.2.3/vendor/endroid/qr-code/tests/QrCodeTest.php on line 20