Fatal error: Uncaught Error: Class 'SebastianBergmann\Comparator\Comparator' not found in C:\xampp\htdocs\laravel-firebird-update\vendor\sebastian\comparator\src\SplObjectStorageComparator.php:17 Stack trace: #0 {main} thrown in C:\xampp\htdocs\laravel-firebird-update\vendor\sebastian\comparator\src\SplObjectStorageComparator.php on line 17