Fatal error: Uncaught Error: Class 'yii\db\Migration' not found in /home/wittyly/public_html/live/hr-witty/migrations/m210716_010556_add_due_hours_column_to_ticket_template_tasks_table.php:8 Stack trace: #0 {main} thrown in /home/wittyly/public_html/live/hr-witty/migrations/m210716_010556_add_due_hours_column_to_ticket_template_tasks_table.php on line 8