Fatal error: Uncaught Error: Class 'Magento\Framework\Module\Setup\Migration' not found in /home/esecureh/public_html/magdemo/vendor/magento/framework/Module/Test/Unit/Setup/_files/data_content_serialized.php:14 Stack trace: #0 {main} thrown in /home/esecureh/public_html/magdemo/vendor/magento/framework/Module/Test/Unit/Setup/_files/data_content_serialized.php on line 14