Fatal error: Uncaught Error: Class 'SebastianBergmann\Comparator\ObjectComparator' not found in D:\xampp7\htdocs\www\nbkm\show_pe\vendor\sebastian\comparator\src\DOMNodeComparator.php:18 Stack trace: #0 {main} thrown in D:\xampp7\htdocs\www\nbkm\show_pe\vendor\sebastian\comparator\src\DOMNodeComparator.php on line 18