When trying to install HA under Proxmox 9.0.3, the following error occurs at startup:
I don’t understand the cause, what can I do?
Just guessing no Internet connection.
Use this script from here
I used the script.
I found the error: HA was assigned an IP from the guest Wi-Fi, and therefore there was no internet connection.
Thanks for updating with the solution: it will help someone else down the road!