I'm getting the following error when submitting a Ninja form that was integrated to the wordpress site.
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.
That is the only error that I'm getting. The site runs in HTTPS. A quick help is utmost appreciated.
Install the plugin Really Simple SSL. Once installed and activated, click on "Go Ahead!" Blue button to activate it.