Backlinks not showing

[Jeefongithub]

Describe the bug
A clear and concise description of what the bug is.

When creating links to pages using the smart picker the page containing the link is not shown in the page where the link connects to

To Reproduce
Steps to reproduce the behavior:

1. Open page in collectives
2. use / or click link & smart picker
3. select collective page
4. Find page to link to and select
5. Once link is created follow link to selected page
6. Once in linked page open sidebar and select tab for backlinks
7. verify Backlinks section shows "No backlinks available"

Expected behavior
A clear and concise description of what you expected to happen.

Expected behavior is backlinks section should show the pages that contain links to said page

Screenshots
If applicable, add screenshots to help explain your problem.

First screen shot shows a page that contains a link to a different page

Second screenshot shows the linked page with the sidebar showing no backlinks

Server details:

• Collectives app version: 2.9.0
• Nextcloud version: 27.1.3
• PHP Version: 8.2.11
• Database: mariadb 10.5.21

Client details:

• OS: Debian 12
• Browser: Mercury (Firefox Fork)
• Browser version: 115.4.0esr
• Device: desktop

Logs

Nextcloud log (data/nextcloud.log)

Insert your Nextcloud log here

nextcloud.log

Browser log

Insert your browser log here, this could for example include:
[console-export-2023-11-11_16-21-35.txt](https://github.com/nextcloud/collectives/files/13326532/console-export-2023-11-11_16-21-35.txt)


a) The javascript console log
b) The network log
c) ...

[mejo-]

Thanks a lot for the bugreport @Jeefongithub. I was able to reproduce. A fix will follow soon.