Notice: Use of undefined constant error - assumed 'error' in recaptchalib.php on line 133

[ashickurnoor]

I was trying to work with recaptcha and native PHP 5.6.10 . When I tried to call $reCaptcha->verifyResponse I got this warning.

[alexhass]

This is not a v2 issue. You need to got to a different queue.

[vrdriver]

Hey, I know this is old, but I had this problem too. See if my version solves it.
https://gist.github.com/vrdriver/929b000135419a57452e6dda7506ec82

[rowan-m]

Closing super old issues. Please re-raise if still relevant.