I was told that two recaptchas in one page, one for subscription and one for comment will conflict and it's what's causing the error on my site.

[Error] Blocked  https://www.google.com/recaptcha/api2/pat?k=6LeBzP0pAAAAAJ_-C_cc7N-QfsKl1Z7LoG6U9H--  from asking for credentials because it is a cross-origin request.
[Error] Failed to load resource: the server responded with a status of 401 () (pat, line 0)

I suspect it's WP-Rocket

This is in Safari. I did allow cross-site tracking, cleared cache but the error persists. 

WP Rocket setting - minification OFF