Using MediaWiki v. 1.32.4. Enabled RecaptchaNoCaptcha (from ConfirmEdit extension) Captcha type in the LocalSettings.php
In the Google reCAPTCHA account, it says
We detected that your site is not verifying reCAPTCHA solutions. This is required for the proper use of reCAPTCHA on your site. Please see our developer site for more information.
It pointed me to this page: https://developers.google.com/recaptcha/docs/verify#api-request
From there, I found that the API request method was set to GET instead of POST. I found two files where this was set to GET:
/ConfirmEdit/ReCaptchaNoCaptcha/includes/ReCaptchaNoCaptcha.php (line 113)
/ConfirmEdit/ReCaptchaNoCaptcha/ReCaptchaNoCaptcha.class.php (line 111)
Also, not sure if this is related, but new users can't seem to create accounts. I'm getting this error message when trying to sign up for our MediaWiki account:
There seems to be a problem with your login session; this action has been canceled as a precaution against session hijacking. Please resubmit the form.
Resubmitting the form returns the same message. Also, not sure if this is preventing existing users from logging in.