You shouldn't be here message when using "Mark forums as read"

[TheThirdBeast]

Hello,

When trying to use the "Mark forums as read" function with a non-admin account (steam created account) I get redirected to a page with the "You shouldn't be here" error message.

However when I'm doing it with my admin account it works fine.

Please note that I have some forums that are restricted to specific groups in term of "View/Post" permissions. Might it be an issue with permissions? The non-admin user I'm using to reproduce this issue does not have the permission to view some of the admin sections.