Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/rwebserver/public_html/anisabel/vendor/simplesoftwareio/simple-qrcode/tests/DataTypes/EmailTest.php:6 Stack trace: #0 {main} thrown in /home/rwebserver/public_html/anisabel/vendor/simplesoftwareio/simple-qrcode/tests/DataTypes/EmailTest.php on line 6