Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in D:\xampp\htdocs\dropifypro\vendor\laravel\cashier\database\migrations\2019_05_03_000001_create_customer_columns.php:7 Stack trace: #0 {main} thrown in D:\xampp\htdocs\dropifypro\vendor\laravel\cashier\database\migrations\2019_05_03_000001_create_customer_columns.php on line 7