ReCaptcha not showing?

Question

Google

I wanted to install several reCaptchas per page, and as I understand it, they need to be installed like this:

<div id="html_element"></div>
<script src="https://www.google.com/recaptcha/api.js?onload=onloadCallback&render=explicit" async defer></script>

var onloadCallback = function() {
            grecaptcha.render('html_element', {
              	'sitekey' : 'Здесь мой ключ'
          	});
        };

But the problem is that the captcha is not shown on the page. How to fix it ?

Answer 1

and you start on that domain where it is necessary?