Fatal error: Uncaught Error: Interface "Symfony\Component\Serializer\NameConverter\AdvancedNameConverterInterface" not found in /home/www/backups/coc-auto-170525/vendor/symfony/serializer/NameConverter/MetadataAwareNameConverter.php:21 Stack trace: #0 {main} thrown in /home/www/backups/coc-auto-170525/vendor/symfony/serializer/NameConverter/MetadataAwareNameConverter.php on line 21