Fatal error: Uncaught Error: Interface 'Symfony\Component\CssSelector\Parser\Handler\HandlerInterface' not found in /home/demohatinco/public_html/hat_learning_management/vendor/symfony/css-selector/Parser/Handler/NumberHandler.php:29 Stack trace: #0 {main} thrown in /home/demohatinco/public_html/hat_learning_management/vendor/symfony/css-selector/Parser/Handler/NumberHandler.php on line 29