Recapture error on upgrade

I get the following error after upgrade …

Fatal error: Cannot redeclare class ReCaptchaResponse in /home/user/website.com/wp-content/plugins/paid-memberships-pro/includes/lib/recaptchalib.php on line 37

I checked the code and it shows this from line 36 …

36   class ReCaptchaResponse
37   {
38       public $success;
39       public $errorCodes;
40   }

I reset the keys and tried again, still got the same result. I also tuned off a lot of my plugins to see if there was a clash, no clash could be found.

I cant see why this is happening. Please help.

https://wordpress.org/plugins/paid-memberships-pro/