Fatal error: Uncaught Error: Interface "Zend\Mail\Header\UnstructuredInterface" not found in /home/mailtrim/public_html/vendor-backup/zendframework/zend-mail/src/Header/ContentType.php:13 Stack trace: #0 {main} thrown in /home/mailtrim/public_html/vendor-backup/zendframework/zend-mail/src/Header/ContentType.php on line 13