Here are my answers:
- Do you have cbpaidsubsbot installed and enabled ?
Yes installed and enabled
- Do you have CBSubs Content integration plugin installed and enabled ?
Yes, installed and enabled
- Does it happen systematically or only for certain pages and at a point of a particular workflow ?
This happened only after I upgraded to the GPL 3.0 version. With the older CBSub all was ok. I didn't test the error on other pages, but now it works fine on all website pages. This error was inside the module "My Subscription" which is shown only for registered users. So public users don't see it but as soon as I log in the error appeared.
Hope this will help you track the issue and I am glad to help.
Nabeel