Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\Fragment\RoutableFragmentRenderer' not found in /home/devmecseminars/public_html/mec/vendor/symfony/http-kernel/Fragment/AbstractSurrogateFragmentRenderer.php:25 Stack trace: #0 {main} thrown in /home/devmecseminars/public_html/mec/vendor/symfony/http-kernel/Fragment/AbstractSurrogateFragmentRenderer.php on line 25