XF 1.1 Viewing unknown page?

[Morgain]

What does it mean if a visitor is displayed as -
Viewing unknown page

This is when you check frontend Who's Online under Members.

 

[Jake Bunce]

It means it's an unknown page.

The question of course is what page? This thread is similar:

http://xenforo.com/community/threads/viewing-unknown-page.23576/

Discovering the exact page requires some digging. There is a suggestion to display more detailed location information.

You should just ignore it unless you are dying to know and are willing to get into the database.

edit - it's probably an addon page that has failed to define its location.