Fatal error: Uncaught Error: Class 'Symfony\Component\Config\Definition\BaseNode' not found in /home/www/public_html/admin/shared/codeigniter/vendor/symfony/config/Definition/ArrayNode.php:23 Stack trace: #0 {main} thrown in /home/www/public_html/admin/shared/codeigniter/vendor/symfony/config/Definition/ArrayNode.php on line 23