Fatal error: Uncaught Error: Class 'SebastianBergmann\Comparator\Comparator' not found in /home/edmedu/www/hana-edu.co.kr/sf4l/vendor/sebastian/comparator/src/ArrayComparator.php:26 Stack trace: #0 {main} thrown in /home/edmedu/www/hana-edu.co.kr/sf4l/vendor/sebastian/comparator/src/ArrayComparator.php on line 26