Fatal error: Uncaught Error: Class "Symfony\Component\Config\Definition\ScalarNode" not found in /home/yrdsb11w3creativ/public_html/yrdsb/vendor/symfony/config/Definition/NumericNode.php:21 Stack trace: #0 {main} thrown in /home/yrdsb11w3creativ/public_html/yrdsb/vendor/symfony/config/Definition/NumericNode.php on line 21