XF 1.5 Forbidden You don't have permission to access /admin.php

[MSiddiq]

I was trying to add new tap in my menu bar.
i was following a link here to create/change menu on my forum-
https://xenforo.com/community/threads/how-to-add-a-new-tab-in-the-navbar.7781/

Now i am facing an error while trying to save the change.
Error Msg: Forbidden, You don't have permission to access /admin.php
Screenshot: http://prntscr.com/c6cfjm

How to solve this issue?
Thank You.

 

[Paul B]

That is a server issue, typically caused by something like mod security.

Contact your host and they should be able to whitelist the rule or disable it.