Fatal error: Uncaught Error: Class 'Illuminate\Database\Eloquent\Collection' not found in C:\xampp\htdocs\admin\vendor\laravel\framework\src\Illuminate\Notifications\DatabaseNotificationCollection.php:7 Stack trace: #0 {main} thrown in C:\xampp\htdocs\admin\vendor\laravel\framework\src\Illuminate\Notifications\DatabaseNotificationCollection.php on line 7