Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\EventListener\AbstractTestSessionListener" not found in C:\Apache24_x64\htdocs\ipad\vendor\symfony\http-kernel\EventListener\TestSessionListener.php:23 Stack trace: #0 {main} thrown in C:\Apache24_x64\htdocs\ipad\vendor\symfony\http-kernel\EventListener\TestSessionListener.php on line 23