Fatal error: Uncaught Error: Interface 'Magento\Framework\DataObject\IdentityInterface' not found in /home/esecureh/public_html/magdemo/vendor/magento/framework/Indexer/CacheContext.php:11 Stack trace: #0 {main} thrown in /home/esecureh/public_html/magdemo/vendor/magento/framework/Indexer/CacheContext.php on line 11