Fatal error: Uncaught Error: Class "SebastianBergmann\Comparator\Factory" not found in D:\Application\www\E-Tracking\vendor\phpspec\prophecy\src\Prophecy\Comparator\Factory.php:21 Stack trace: #0 {main} thrown in D:\Application\www\E-Tracking\vendor\phpspec\prophecy\src\Prophecy\Comparator\Factory.php on line 21