Fatal error: Uncaught Error: Interface "Symfony\Component\Config\Definition\Builder\NodeParentInterface" not found in /home/.sites/site4/wwwroot/web/4.0/ui/vendor/symfony/config/Definition/Builder/TreeBuilder.php:22 Stack trace: #0 {main} thrown in /home/.sites/site4/wwwroot/web/4.0/ui/vendor/symfony/config/Definition/Builder/TreeBuilder.php on line 22