reCaptcha in lightbox

Hello, I'm trying to insert a recaptcha into a page, I was able to successfully insert the contact page through an AJAX form.

The problem is in an AJAX form that is inside a lightbox (in case I use featherlight but I think it does not influence), I add everything correctly, but when I click on "I am not a steal" it will load and return the following error in console:

  

Uncaught DOMException: Blocked a frame with origin "www.google.com" from accessing a cross-origin frame.       at www.pc.ca       at Kp.xb (www.gstatic.com/recaptcha/api2/r20170411114922/recaptcha__english.js:343:59)

My code:

1st Form:

<form action="envia_franquias.php" method="post" id="form_franquias">
    <input type="text" name="nome" id="nome" placeholder="Nome Completo:" required>
    <input type="tel" name="telefone" id="telefone" placeholder="Telefone/Celular:" required>
    <input type="email" name="email" id="email" placeholder="E-mail:" required>
    <input type="text" name="cidade" id="cidade" placeholder="Cidade:" required>
    <input type="text" name="estado" id="estado" placeholder="UF" required>
    <textarea name="mensagem" id="mensagem" placeholder="Comentários:"></textarea>
    <div id="captcha"></div>
    <input type="submit" value="Enviar" id="submit" class="btn_send">
</form>

2nd Js:

    <script>
       var widgetId2;
        var onloadCallback = function() {
            widgetId2 = grecaptcha.render('captcha', {'sitekey' : '6LffYh0UAAAAAA8CJ7p7gmOtc3Cr_gAjqVDTNFYL'});
        };
        $(".btn_franquias a").click(function() {
            setTimeout(function() {
                createRecaptcha();
            }, 1000);
        });
        function createRecaptcha() {
            grecaptcha.reset(widgetId2);
        }
    </script>
    <script src="//www.google.com/recaptcha/api.js?onload=onloadCallback&render=explicit" async defer></script>

  

I've tried putting the src script with the start http

     

I have tried to put the render in a setTimeOut

I did not find anything else on the internet, could anyone help?