Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in /home/sourceex/public_html/pm/database/migrations/2021_12_30_082542_add_added_by_column_knowledge_base_table.php:7 Stack trace: #0 {main} thrown in /home/sourceex/public_html/pm/database/migrations/2021_12_30_082542_add_added_by_column_knowledge_base_table.php on line 7