Recaptcha couldn’t find user-provided function: onloadcallback

Hello, posting here since I couldn’t get an response from the “Ultimate-Member recaptcha” support forum.

I am getting this error when a user submits a form “Recaptcha couldn’t find user-provided function: onloadcallback” which is likely the reason some of the spam registrations pass through.

Does anyone here have encountered this problem?

This is the link for full details of the problem I posted in the UM-recaptcha forum

https://ww.wp.xz.cn/support/topic/recaptcha-couldnt-find-user-provided-function-onloadcallback-3/