Fatal error: Uncaught Error: Class "SebastianBergmann\Comparator\Comparator" not found in I:\www\frameworks\Laravel\vendor\sebastian\comparator\src\SplObjectStorageComparator.php:15 Stack trace: #0 {main} thrown in I:\www\frameworks\Laravel\vendor\sebastian\comparator\src\SplObjectStorageComparator.php on line 15