Fatal error: Uncaught Error: Class 'Magento\Framework\Mail\Message' not found in /home/esecureh/public_html/magdemo/vendor/magento/framework/Mail/EmailMessage.php:23 Stack trace: #0 {main} thrown in /home/esecureh/public_html/magdemo/vendor/magento/framework/Mail/EmailMessage.php on line 23