Fatal error: Uncaught Error: Class "SebastianBergmann\Comparator\ObjectComparator" not found in C:\Apache24_x64\htdocs\ipad\vendor\sebastian\comparator\src\DOMNodeComparator.php:18 Stack trace: #0 {main} thrown in C:\Apache24_x64\htdocs\ipad\vendor\sebastian\comparator\src\DOMNodeComparator.php on line 18