Fatal error: Uncaught Error: Class "Magento\Framework\View\Element\Template" not found in /var/www/magento/html/app/code/Aligent/CMSMegamenu/Block/Widget/Megamenu.php:16 Stack trace: #0 {main} thrown in /var/www/magento/html/app/code/Aligent/CMSMegamenu/Block/Widget/Megamenu.php on line 16