Fatal error: Uncaught Error: Class "Symfony\Component\Config\Definition\Exception\Exception" not found in /home/yrdsb11w3creativ/public_html/yrdsb/vendor/symfony/config/Definition/Exception/UnsetKeyException.php:20
Stack trace:
#0 {main}
thrown in /home/yrdsb11w3creativ/public_html/yrdsb/vendor/symfony/config/Definition/Exception/UnsetKeyException.php on line 20