Fatal error: Uncaught Error: Class "SebastianBergmann\Comparator\Factory" not found in C:\Apache24_x64\htdocs\ex-vak\vendor\phpspec\prophecy\src\Prophecy\Comparator\Factory.php:21 Stack trace: #0 {main} thrown in C:\Apache24_x64\htdocs\ex-vak\vendor\phpspec\prophecy\src\Prophecy\Comparator\Factory.php on line 21