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