Fatal error: Uncaught Error: Interface "Symfony\Component\Security\Core\User\UserProviderInterface" not found in /var/www/crm_killing_ninja/core/backend/Security/Ldap/AppLdapUserProvider.php:39 Stack trace: #0 {main} thrown in /var/www/crm_killing_ninja/core/backend/Security/Ldap/AppLdapUserProvider.php on line 39