Oh yeah, Got you! I once had the same issue with UNA 13.0.0-RC1.

Out of nowhere, some of my urls started failing to display correctly. They were showing like this:

mysite[dot]com/view-post/qxv05d

I have been told by Alext T. that when the script can't generate URL from the title, then a random string is used.

After some UNA updates, the problem disappeared and everything was back to normal.

I've never discovered why the system failed to properly generate URLs. Maybe just some weird UNA thingies.

Please see my full post about that problem here:

https://unacms.com/d/why-do-my-post-links-look-different

I might be wrong but your issue has nothing to do with the 'rewrite_module - UNDEFINED' message in the Audit. We all have that message and our URLs are just being generated correctly.

Below are some suggestions to help you sort out your problem with random strings being added to urls:

1. Double-check whether mod_rewrite is installed correctly on your server.
2. Update your site to the latest stable version of UNA (13.1.0)
3. Try to use additional rewrite rules to make your urls look like /d/my-title-here instead of /view-discussion/my-title-here.

Please read more about additional rewrite rules here:

https://unacms.com/cmts-view/1crxfr0?sys=bx_forum&cmt_id=47152

Here is my short guide on how to implement them:

https://unacms.com/cmts-view/1crxfr0?sys=bx_forum&cmt_id=47152

Regards!