Fatal error: Uncaught Error: Class "Magento\Backend\Block\Widget\Form\Generic" not found in /home/airtimer/public_html/app/code/Magiccart/Magicmenu/Block/Adminhtml/Menu/Edit/Tab/Form.php:16 Stack trace: #0 {main} thrown in /home/airtimer/public_html/app/code/Magiccart/Magicmenu/Block/Adminhtml/Menu/Edit/Tab/Form.php on line 16