Fatal error: Uncaught Error: Class "SebastianBergmann\Comparator\Comparator" not found in E:\www\ypmvc\3.0\mvc\composer\vendor\myclabs\php-enum\src\PHPUnit\Comparator.php:15 Stack trace: #0 {main} thrown in E:\www\ypmvc\3.0\mvc\composer\vendor\myclabs\php-enum\src\PHPUnit\Comparator.php on line 15