Fatal error: Uncaught Error: Class 'yii\db\Migration' not found in /home/wittyly/public_html/live/hr-witty/migrations/m221012_005341_add_indexes_to_global_uploads.php:8 Stack trace: #0 {main} thrown in /home/wittyly/public_html/live/hr-witty/migrations/m221012_005341_add_indexes_to_global_uploads.php on line 8