Fatal error: Uncaught Error: Class "SebastianBergmann\Comparator\ScalarComparator" not found in C:\mywamp\sites\allsite\calcomposer\vendor\sebastian\comparator\src\NumericComparator.php:16 Stack trace: #0 {main} thrown in C:\mywamp\sites\allsite\calcomposer\vendor\sebastian\comparator\src\NumericComparator.php on line 16