Fatal error: Uncaught Error: Interface "Symfony\Component\Config\Definition\Builder\NodeParentInterface" not found in C:\Apache24\htdocs\cms_upgrade\vendor\symfony\config\Definition\Builder\NodeDefinition.php:23 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\cms_upgrade\vendor\symfony\config\Definition\Builder\NodeDefinition.php on line 23