protected function validateLogin(Request $request){

        $this->validate($request, [
            $this->username() => ['required'],
            'password' => ['required'],
            'captcha' => ['required', 'captcha'],
        ],[
            'captcha.required' => trans('validation.required'),
            'captcha.captcha' => trans('validation.captcha'),
        ]);
    }
Copy

[
 'captcha' => 'required|captcha_api_check:' . $this->request->get('key'),
]Copy

[
 'captcha' => 'required|captcha_check',
]Copy