Error installing Home Assistant

Hi everyone,
I’m trying to install Home Assistant on a Raspberry Pi 4 but the installation fails and I get this message

Can anyone help me?
Thank you

This is typically when HAOS has a problem reaching the Internet to download Home Assistant Core. It tries to reach the GitHub container registry to do so. Is the registry reachable from your network? Maybe a temporary outage?

Excuse my ignorance but I’m new to the home assistant world…
How do I reach the GitHub container registers? What should I check or what should I do?
I don’t think it’s a network problem because the network works correctly and the error keeps coming up.
Thanks for your help