Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /opt/lampp/htdocs/myhospitalnow/suitecrm/vendor/symfony/mailer/Test/TransportFactoryTestCase.php:29 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/myhospitalnow/suitecrm/vendor/symfony/mailer/Test/TransportFactoryTestCase.php on line 29