Hello, there.
I do see the Facebook feed widget working on the site itself, so I assume you’re seeing that error inside your wp-admin when trying to edit the information in the widget itself, is that correct?
If so, would you be able to try disabling all other plugins except for Jetpack to see if the issue continues? If everything looks normal while doing so, then you can switch on each other plugin one by one until you see the problem happen again.
If you still see the issue even with all other plugins disabled, could you also try switching out your theme for a more minimalistic one (such as Twenty Twenty Two) to make sure this isn’t some sort of theme conflict?
Please let us know the results of the above troubleshooting and we can go from there. Thanks!
Thanks for responding. It was actually the feed on the published page which was showing the error as per the following: https://1drv.ms/u/s!AlLRj2TBcnMvili1emllTR_NOURH?e=kTLthQ
I tried it from another device and it works as it should, as you had noted. There must be a cookie issue or something with my browser.
This can be closed, thanks so much for your time.
