Fatal error: Uncaught Error: Class 'SebastianBergmann\Comparator\ArrayComparator' not found in /home/edmedu/www/hana-edu.co.kr/renew/vendor/sebastian/comparator/src/ObjectComparator.php:21 Stack trace: #0 {main} thrown in /home/edmedu/www/hana-edu.co.kr/renew/vendor/sebastian/comparator/src/ObjectComparator.php on line 21