[Error occured at line 774]

I am getting the following error now (please note that this worked fine up until recently).
When I click Grant Access Rights I get the following:

Some or all access permissions are missing. Please click the button Grant access rights! and authorize the plugin to post to your Facebook profile or page.
[Error occured at line 774]

Your page or profile’s access permissions could not be verified.

https://www.ads-software.com/extend/plugins/facebook-page-publish/