Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /usr/www/unityweb/public/hms/vendor/symfony/mailer/Test/AbstractTransportFactoryTestCase.php:21 Stack trace: #0 {main} thrown in /usr/www/unityweb/public/hms/vendor/symfony/mailer/Test/AbstractTransportFactoryTestCase.php on line 21