Fatal error: Uncaught Error: Class 'SebastianBergmann\Comparator\Comparator' not found in C:\Apache24\htdocs\vendor.old\sebastian\comparator\src\SplObjectStorageComparator.php:17 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\vendor.old\sebastian\comparator\src\SplObjectStorageComparator.php on line 17