Fatal error: Uncaught Error: Class 'SebastianBergmann\Comparator\ObjectComparator' not found in D:\xampp\htdocs\psp\backend\vendor\sebastian\comparator\src\ExceptionComparator.php:17 Stack trace: #0 {main} thrown in D:\xampp\htdocs\psp\backend\vendor\sebastian\comparator\src\ExceptionComparator.php on line 17