Fatal error: Uncaught Error: Interface 'Symfony\Component\Config\Definition\Builder\NodeParentInterface' not found in /home/almasai/www/people/_old_site/vendor/symfony/src/Symfony/Component/Config/Definition/Builder/NodeBuilder.php:19 Stack trace: #0 {main} thrown in /home/almasai/www/people/_old_site/vendor/symfony/src/Symfony/Component/Config/Definition/Builder/NodeBuilder.php on line 19