Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in C:\xampp\htdocs\snipe-it\database\migrations\2015_04_29_234704_add_slack_to_settings.php:6 Stack trace: #0 {main} thrown in C:\xampp\htdocs\snipe-it\database\migrations\2015_04_29_234704_add_slack_to_settings.php on line 6