Fatal error: Uncaught Error: Interface 'Symfony\Component\Security\Http\Logout\LogoutSuccessHandlerInterface' not found in /home/soh-works/www/3good_old/vendor/symfony/security-http/Logout/DefaultLogoutSuccessHandler.php:23 Stack trace: #0 {main} thrown in /home/soh-works/www/3good_old/vendor/symfony/security-http/Logout/DefaultLogoutSuccessHandler.php on line 23