Fatal error: Uncaught Error: Class "Magento\Backend\App\Action" not found in /var/www/magento/html/app/code/Amasty/BannersLite/Controller/Adminhtml/Banners/Upload.php:12
Stack trace:
#0 {main}
thrown in /var/www/magento/html/app/code/Amasty/BannersLite/Controller/Adminhtml/Banners/Upload.php on line 12