Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /opt/lampp/htdocs/intisolve/vendor/bacon/bacon-qr-code/test/Encoder/EncoderTest.php:17 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/intisolve/vendor/bacon/bacon-qr-code/test/Encoder/EncoderTest.php on line 17