Blocked by ORB issue


I’ve recently Umbrel OS on my Raspi 4b flawlessly. It works fine with Nextcloud but I have an issue with Penpot. The installation seemed to work fine I I can use the program in general. But the previews penpot is generating for files are frames inside a design file can’t be loaded (see screenshots). The location where penpot is trying to load the assets from is for example:

In the inspection I can see them so it saves them but loading is prevented somehow.
Any ideas how I can fix that?

Thanks in advance,

I just realized that its probably related to the missing port in the asset URL which why it has cross origin issues. Any idea how to fix that?