Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/app/htdocs/message_gateway_20231016/vendor/symfony/http-foundation/Tests/Session/SessionTest.php:27 Stack trace: #0 {main} thrown in /home/app/htdocs/message_gateway_20231016/vendor/symfony/http-foundation/Tests/Session/SessionTest.php on line 27