How to delete old PlantUML generated link?

Hi all,
I am running GitLab server on company server using Docker technology.
Employees can use this local server with success.
I am running PlantUML docker also in the same network so GitLab and PlantUML server can work together. At the beginning we made a mistake so the system generated wrong PlantUML link.

Can I delete some plantuml link that does not work?
I need to delete some old link about PlantUML, is it possible?
How can I do it?

In this moment the system generate link properly and newer link are good!