Call to Undefined method Illuminate\Support\Facades\Validator::make() in Laravel 5.4

I'm just trying to implement a simple validation using Laravel Validator Facade. But it keeps giving me this error below:

Fatal error: Call to undefined method Illuminate\Support\Facades\Validator::make() in C:\xampp\htdocs..\vendor\laravel\framework\src\Illuminate\Support\Facades\Facade.php on line 221

This is my code below:

use Validator;

  /**
 * Validate the tenant's credentials
 *
 * @param array $data
 * @return bool
 */
public function validate(array $data)
{
    $data = array_only($data, ['email', 'href']);

    $validator = Validator::make($data, $this->rules);

    if ($validator->passes()) return true;

    $this->errors = $validator->messages();

    return false;
}

via geebengs