Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /var/www/html/usophy/vendor/symfony/psr-http-message-bridge/Tests/Factory/AbstractHttpMessageFactoryTest.php:27 Stack trace: #0 {main} thrown in /var/www/html/usophy/vendor/symfony/psr-http-message-bridge/Tests/Factory/AbstractHttpMessageFactoryTest.php on line 27