Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\Fragment\RoutableFragmentRenderer' not found in /home/optinadmin/rfl.optin.co.nz/concrete/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/Fragment/EsiFragmentRenderer.php:25 Stack trace: #0 {main} thrown in /home/optinadmin/rfl.optin.co.nz/concrete/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/Fragment/EsiFragmentRenderer.php on line 25