Fatal error: Uncaught Error: Class "Symfony\Component\HttpFoundation\Session\Storage\Handler\NativeSessionHandler" not found in C:\mywamp\sites\allsite\calcomposer\vendor\symfony\http-foundation\Session\Storage\Handler\NativeFileSessionHandler.php:19 Stack trace: #0 {main} thrown in C:\mywamp\sites\allsite\calcomposer\vendor\symfony\http-foundation\Session\Storage\Handler\NativeFileSessionHandler.php on line 19