Fatal error: Uncaught Error: Class 'PHPUnit_Framework_TestCase' not found in /home/app/htdocs/lidia/vendor/bacon/bacon-qr-code/tests/BaconQrCode/Encoder/MatrixUtilTest.php:19 Stack trace: #0 {main} thrown in /home/app/htdocs/lidia/vendor/bacon/bacon-qr-code/tests/BaconQrCode/Encoder/MatrixUtilTest.php on line 19