"Failed to fetch network info" in Installation

Hey,
after I had the feeling that I had unsolvable errors in my home assistant installation, I wanted to set up my VM again.
I now have the 4th-5th run, but I keep getting this error in the setup. Each time it is a completely new Proxmox VM. The network settings (at least on my router) are fine. I even had this error with my first installation back then.

I’ve been waiting for about an hour for the backup to restore itself (170mb in size). So something doesn’t seem to be working at all.

Please help!

PS: The console looks fine so far, at least when restoring the backup:

PPS: Obviously an internal network problem, because HA can download data.
grafik


Now a new attempt with Proxmox Helper scripts (as with my first installation). After 20 minutes it looks like this again: