Fatal error: Uncaught Error: Class "SebastianBergmann\Comparator\ObjectComparator" not found in I:\www\php_vendor_tests\vendor\sebastian\comparator\src\MockObjectComparator.php:17 Stack trace: #0 {main} thrown in I:\www\php_vendor_tests\vendor\sebastian\comparator\src\MockObjectComparator.php on line 17