Fatal error: Uncaught Error: Interface 'Illuminate\Contracts\Validation\Rule' not found in C:\xampp\htdocs\admin\vendor\laravel\framework\src\Illuminate\Validation\ClosureValidationRule.php:7 Stack trace: #0 {main} thrown in C:\xampp\htdocs\admin\vendor\laravel\framework\src\Illuminate\Validation\ClosureValidationRule.php on line 7