Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home2/santhos2/public_html/demo-ecom.firstmatrix.in.net/vendor/simplesoftwareio/simple-qrcode/tests/GeneratorTest.php:16 Stack trace: #0 {main} thrown in /home2/santhos2/public_html/demo-ecom.firstmatrix.in.net/vendor/simplesoftwareio/simple-qrcode/tests/GeneratorTest.php on line 16