This has been resolved in both AMS 2.2.28 and UBS 2.2.30.
This is tied to the Posting user being set as "Post as guest, use name information from feed data.".
Note: If you set an actual posting user that is a valid XF User, then the Author Watch does not throw an error.
This is tied to the Posting user being set as "Post as guest, use name information from feed data.".
Note: If you set an actual posting user that is a valid XF User, then the Author Watch does not throw an error.