Installation with ISO on a KVM host gives error: "an attempt to configure apt to install additional packages from cd failed"

Hi,

I tried installing UCS both from 4.4 and 5.0 ISOs on a KVM host (Contabo VPS with is Proxmox based) and I get the following error while installation:

an attempt to configure apt to install additional packages from cd failed
image

It doesn’t seem to be a general network related issues (as highlighted here) because I can ping Google in the shell after the failed attempt. Does someone has an idea what can be the potential reason for this?

Thanks,
Abhinav

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