Fatal error: Uncaught Error: Class 'Validator' not found in D:\xampp\htdocs\app_patient_test\vendor\toplan\laravel-sms\src\Toplan\LaravelSms\validations.php:3 Stack trace: #0 {main} thrown in D:\xampp\htdocs\app_patient_test\vendor\toplan\laravel-sms\src\Toplan\LaravelSms\validations.php on line 3