Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /opt/lampp/htdocs/wagateway/vendor/uxweb/sweet-alert/tests/SweetAlertNotifierTest.php:8 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/wagateway/vendor/uxweb/sweet-alert/tests/SweetAlertNotifierTest.php on line 8