title: Mixed Content Exception in Wordpress
body: <p>I'm getting the following error when submitting a Ninja form that was integrated to the wordpress site. </p>
  
  <pre><code>Mixed Content: The page at 'https://my.domain/event/test-page/' was loaded over HTTPS, but requested an insecure XMLHttpRequest endpoint 'http://my.domain/wp-admin/admin-ajax.php'. This request has been blocked; the content must be served over HTTPS. 
  </code></pre>
  
  <p>That is the only error that I'm getting. 
  The site runs in HTTPS. 
  A quick help is utmost appreciated. </p>