Fatal error: Uncaught Error: Class 'Magento\Backend\Model\Menu\Builder\AbstractCommand' not found in /home/esecureh/public_html/magdemo/vendor/magento/module-backend/Model/Menu/Builder/Command/Update.php:13 Stack trace: #0 {main} thrown in /home/esecureh/public_html/magdemo/vendor/magento/module-backend/Model/Menu/Builder/Command/Update.php on line 13