Fatal error: Uncaught Error: Class 'Symfony\Component\HttpFoundation\Response' not found in /home/optinadmin/rfl.optin.co.nz/concrete/src/Http/Response.php:7 Stack trace: #0 {main} thrown in /home/optinadmin/rfl.optin.co.nz/concrete/src/Http/Response.php on line 7