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