Fatal error: Uncaught Error: Class 'Zend_Validate_EmailAddress' not found in /home/esecureh/public_html/magdemo/vendor/magento/framework/Validator/EmailAddress.php:10 Stack trace: #0 {main} thrown in /home/esecureh/public_html/magdemo/vendor/magento/framework/Validator/EmailAddress.php on line 10