Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in C:\xampp\htdocs\database\migrations\2018_02_16_175830_add_columns_to_items_for_groups.php:7 Stack trace: #0 {main} thrown in C:\xampp\htdocs\database\migrations\2018_02_16_175830_add_columns_to_items_for_groups.php on line 7