Fatal error: Uncaught Error: Class "SebastianBergmann\Comparator\ObjectComparator" not found in /Applications/MAMP/htdocs/fislnew/vendor/sebastian/comparator/src/DOMNodeComparator.php:19 Stack trace: #0 {main} thrown in /Applications/MAMP/htdocs/fislnew/vendor/sebastian/comparator/src/DOMNodeComparator.php on line 19