Fatal error: Uncaught Error: Class 'SebastianBergmann\Comparator\Comparator' not found in /var/www/up.tantal-metall.com/yii_up/vendor/sebastian/comparator/src/ResourceComparator.php:15 Stack trace: #0 {main} thrown in /var/www/up.tantal-metall.com/yii_up/vendor/sebastian/comparator/src/ResourceComparator.php on line 15