Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /opt/lampp/htdocs/msjsurvey/vendor/bacon/bacon-qr-code/test/Common/ErrorCorrectionLevelTest.php:10 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/msjsurvey/vendor/bacon/bacon-qr-code/test/Common/ErrorCorrectionLevelTest.php on line 10