Fatal error: Uncaught Error: Interface 'Illuminate\Contracts\Mail\Factory' not found in D:\xampp\htdocs\psp\backend\vendor\laravel\framework\src\Illuminate\Mail\MailManager.php:29 Stack trace: #0 {main} thrown in D:\xampp\htdocs\psp\backend\vendor\laravel\framework\src\Illuminate\Mail\MailManager.php on line 29