Fatal error: Uncaught Error: Class 'yii\db\Migration' not found in /home/wittyly/public_html/live/hr-witty/migrations/m250114_073743_alter_users_table_firebase_uid_allow_null.php:8 Stack trace: #0 {main} thrown in /home/wittyly/public_html/live/hr-witty/migrations/m250114_073743_alter_users_table_firebase_uid_allow_null.php on line 8