Fatal error: Uncaught Error: Class "SebastianBergmann\Comparator\ObjectComparator" not found in /home/appdemo/public_html/samena-mailer/vendor/sebastian/comparator/src/DOMNodeComparator.php:21 Stack trace: #0 {main} thrown in /home/appdemo/public_html/samena-mailer/vendor/sebastian/comparator/src/DOMNodeComparator.php on line 21