Fatal error: Uncaught Error: Interface 'Magento\Framework\View\Element\Block\ArgumentInterface' not found in /home/esecureh/public_html/magdemo/vendor/magento/framework/Data/CollectionDataSourceInterface.php:13 Stack trace: #0 {main} thrown in /home/esecureh/public_html/magdemo/vendor/magento/framework/Data/CollectionDataSourceInterface.php on line 13