How to remove an entry in the navigation bar when related page does not exist?

Hello,
in the XWiki instance where I am doing ongoing tests, I noticed there is a remaining entry, Diagram in the left Navigation section, which I seem enable to remove.
The context : XWiki 15.10.2 (updated today), in a Debian server VM.
Here is a pic of the entry in the Navigation section:
Screenshot 2023-12-27 at 16-45-46 Diagram - XWiki

and when I go the the related page:
Screenshot 2023-12-27 at 16-46-15 Diagram - XWiki

I have been unable to find how to remove that entry, even searching on the web and on the forum. How can that be done?
Thank you!

Hello this is how it works: https://extensions.xwiki.org/xwiki/bin/view/Extension/Panels%20Application#HNavigationPanel

This also suggests you installed some diagram extension. Could you specify which one?

Thx

PS: your screenshot link doesn’t work for me.

We had Diagram Pro installed during a test period, we don’t have it anymore at the moment. Sorry about the picture, I had accidently removed the ! sign preceeding the picture information. Now it is repaired.
I am going to study the page you pointed me to. Thank you very much!

Hello,
I am now studying the Panels documentation, and I notice something I had seen before, which I find strange.
In the right sidebar under the My Recent Modifications section
Screenshot 2023-12-28 at 10-11-58 Panels - XWiki

and when inserting the words Домашня сторінка in a translator, it says, it means Home Page in Ukrainian.
So there is something wrong there, isn’t there?

PS: I am unsure if the Navigation panel is supposed to contain just imported Spaces or any new entry because it looks like it behaves like a breadcrumbs navigation sections. So what is it supposed to be really? Maybe my first question should have been why are there entries added here which are not part of the Confluence spaces imported?

How did you remove the Diagram Pro extension? Maybe you didn’t use the Extension Manager? In any case, if it appears in the Navigation Panel, it means that there are some pages not removed. You should enable viewing hidden pages and remove them. See https://www.xwiki.org/xwiki/bin/view/Documentation/UserGuide/Features/PageEditing#HHidingPages

As indicated on https://extensions.xwiki.org/xwiki/bin/view/Extension/Panels%20Application#HNavigationPanel :

The Navigation Panel displays the page hierarchy allowing you to navigate through your wiki.

So that’s the page hierarchy for all pages, except the pages excluded following the doc at https://extensions.xwiki.org/xwiki/bin/view/Extension/Panels%20Application#HNavigationPanel :

The top level application pages are excluded from the tree by default (provided that the top level page is of a type that denies being modified by users), in order to let you focus on your own content and because the applications are also accessible from the Applications Panel. However, you can disable this filter (if you want to view all pages) or configure other page exclusions from the Wiki Administration.

It seems to mean that you have the Ukrainian language set up and active.

How did you remove the Diagram Pro extension? Maybe you didn’t use the Extension Manager?

I only use the extension manager. I have not tried to use other methods for any extension.

In any case, if it appears in the Navigation Panel, it means that there are some pages not removed. You should enable viewing hidden pages and remove them. See https://www.xwiki.org/xwiki/bin/view/Documentation/UserGuide/Features/PageEditing#HHidingPages

This should not have happened. On the documentation you point out I read 12.2+ The SuperAdmin user always sees hidden pages. As I was logged in as admin while working on it, I should conclude there was no hidden page.

Since then I have hidden the Diagram entry from the Navigation panel. Maybe I’ll unhide it later, to investigate again.

It seems to mean that you have the Ukrainian language set up and active.

I don’t think so:
Screenshot 2024-01-02 at 14-44-25 Global Administration - XWiki

Is there another place where I should look? (I have updated to 15.10.3 this morning, not sure it will re appear?)

A user with Admin rights is NOT the superadmin user.

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Let us know if it reappears (I hadn’t realized it was flickering, that looks odd).

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Starting from your link I found a way to hide it, but not to remove it (I suppose it has to be written in the database somehow this is why I thought there would be a way to remove it completely… The same way a full Space and all its belonging pages can be removed, for example).