Fatal error: Uncaught Error: Class "SebastianBergmann\Comparator\ObjectComparator" not found in D:\programs\xampp\htdocs\blog\vendor\sebastian\comparator\src\MockObjectComparator.php:20 Stack trace: #0 {main} thrown in D:\programs\xampp\htdocs\blog\vendor\sebastian\comparator\src\MockObjectComparator.php on line 20