Unique validation is not working in Laravel

Unique validation is not working in Laravel

  $validator = Validator::make(request()->all(), 
                [
                    'firstname'=> 'required',
                    'lastname'=>'required',
                    'email'=>"required|unique:users,email",
                    'password'=>'required',
                    'phone'=>"required|unique:users,phone"
                ]);
                if ($validator->fails()){
                    return Response::json(
                        array(
                            'code'      =>  400,
                            'message'   =>  $validator->messages()->toArray()
                        ), 400);
    }

not working for non unique values

via Chebli Mohamed