Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/kardi/public_html/vendor2523/srmklive/paypal/tests/Feature/AdapterConfigTest.php:9 Stack trace: #0 {main} thrown in /home/kardi/public_html/vendor2523/srmklive/paypal/tests/Feature/AdapterConfigTest.php on line 9