Fatal error: Uncaught Error: Class 'Magento\Framework\Validator\AbstractValidator' not found in /home/esecureh/public_html/magdemo/vendor/magento/framework/Session/Config/Validator/CookieLifetimeValidator.php:9 Stack trace: #0 {main} thrown in /home/esecureh/public_html/magdemo/vendor/magento/framework/Session/Config/Validator/CookieLifetimeValidator.php on line 9