XF 2.0 Tried Logging out as user causes this error

[Bionic Rooster]

trying to log out as admin causes the same error

 

[Bionic Rooster]

Resolved - requires Guest to be able to 'View' nodes otherwise logging out defaults to this message

 

[Mike]

You've snipped it quite a lot down, but presumably this is after you've logged out. In which case, if you've taken away the view permission (or the permission required for whatever your index page is), this would be expected -- you can't view the page you're taken to after logging out.