Some pages not being found, nothing has changed Confluence side.

[Harry O_Connor]

We are currently having an issue where some sub pages in areas are showing the error:

"Page Not Found

The page you were trying to reach could not be found: it may have been renamed or moved to another space, or the name you requested may be incomplete."

Yet strangely on the "In this Space" it shows the beginning parts of the pages that are showing this error as a preview, but you click the link it gives you the same error.

I have rebuilt the Confluence Index and restarted Confluence a couple of times.

Confluence wise nothing has changed and this only seems to be effecting a minor amount of pages.

The only change that has happened server side (a few weeks ago) was a move from Ubuntu 18.04 to Ubuntu 20.04, in my testing afterwards Confluence seemed to be running normally.

Has anyone else had a similar issue?