Fatal error: Uncaught Error: Interface "Illuminate\Contracts\Support\Arrayable" not found in D:\xampp\htdocs\dropifypro\vendor\laravel\cashier\src\Discount.php:11 Stack trace: #0 {main} thrown in D:\xampp\htdocs\dropifypro\vendor\laravel\cashier\src\Discount.php on line 11