Error message not appearing on Google Captcha in Laravel application - php

Question

I am trying to implement a Google Captcha on my Laravel site on the login page. I am using Anam Hossain's Captcha plugin. The captcha appears and allows users to login to the site when it is checked, and prevents users from logging in when it is unchecked, however the error message informing users that they must fill out the captcha doesn't appear.
In my AppServiceProvider I have extended the Validator class to create a rule for 'google-captcha', with a number of error codes in a file 'GoogleRecaptcha.php'. The validator function sits in the LoginController where the rules are added. The captcha itself is displayed in the view, login.blade.php. The validator function is called in AuthenticatesUsers.php.
My code is as follows:
// AppServiceProvider.php
Validator::extend('google_captcha', function ($attribute, $value, $parameters, $validator){
$http=Http::asForm()->post(config('google_captcha.gc_verification_url'),[
'secret' => config('google_captcha.secret_key'),
'response' =>$value,
]);
if(!$http->object()->success){
$errorMessage=null;
collect($http->object()->{"error-codes"})->each(function ($item)use(&$errorMessage){
$errorMessage.=config('google_captcha.error_codes')[$item];
});
$validator->addReplacer('google_captcha',
function($message, $attribute, $rule, $parameters) use ($errorMessage) {
return \str_replace(':message', $errorMessage, $message);
}
);
}
// LoginController.php
class LoginController extends Controller
{
/*
|--------------------------------------------------------------------------
| Login Controller
|--------------------------------------------------------------------------
|
| This controller handles authenticating users for the application and
| redirecting them to your home screen. The controller uses a trait
| to conveniently provide its functionality to your applications.
|
*/
use AuthenticatesUsers;
/**
* Where to redirect users after login.
*
* #var string
*/
protected $redirectTo = RouteServiceProvider::ADMININDEX;
protected $maxAttempts = 5;
protected $decayMinutes = 60;
/**
* Create a new controller instance.
*
* #return void
*/
public function __construct()
{
$this->middleware('guest')->except('logout');
}
/**
* Get a validator for an incoming registration request.
*
* #param array $data
* #return \Illuminate\Contracts\Validation\Validator
*/
public function validator(array $data)
{
$messages = [
'g-recaptcha-response.required' => 'You must complete the captcha',
];
return Validator::make($data, [
'email' => ['required', 'string', 'email', 'max:255'],
'password' => ['required', 'string', 'min:8'],
'g-recaptcha-response' => ['required', 'google_captcha']
], $messages);
}
GoogleRecaptcha.php
namespace App\Rules;
use Anam\Captcha\Captcha;
use Illuminate\Contracts\Validation\Rule;
class GoogleRecaptcha implements Rule
{
/**
* Determine if the validation rule passes.
*
* #param string $attribute
* #param mixed $value
* #return bool
*/
public function passes($attribute, $value)
{
$captcha = new Captcha();
$response = $captcha->check(request());
if (! $response->isVerified()) {
dd($response->errors());
}
return $response->isVerified();
}
public function message()
{
return 'Please fill out the captcha.';
}
}
AuthenticatesUsers.php
public function login(Request $request)
{
$this->validator($request->all())->validate();
login.blade.php
<div class="form-group row">
<div class="col-md-6 offset-md-4">
<div class="form-check">
<input class="form-check-input" type="checkbox" name="remember" id="remember" {{ old('remember') ? 'checked' : '' }}>
<label class="form-check-label" for="remember">
{{ __('Remember Me') }}
</label>
</div>
</div>
</div>
#captcha()
<div class="form-group row mb-0">
<div class="col-md-8 offset-md-4">
In GoogleRecaptcha.php do I need to return a value to the view?
Any further info would be appreciated.
Thanks,
Regards,
Robert