Fatal error: Uncaught Error: Class "Symfony\Component\Finder\Comparator\Comparator" not found in C:\WebServer\htdocs\bookshelf\vendor\symfony\finder\Comparator\DateComparator.php:19 Stack trace: #0 {main} thrown in C:\WebServer\htdocs\bookshelf\vendor\symfony\finder\Comparator\DateComparator.php on line 19