Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in C:\xampp\htdocs\database\migrations\2021_12_21_170924_add_sending_server_id_field_to_contact_groups.php:7 Stack trace: #0 {main} thrown in C:\xampp\htdocs\database\migrations\2021_12_21_170924_add_sending_server_id_field_to_contact_groups.php on line 7