Failed to create HVM cluster in 8.0.10

[dya]

Downloaded 8.0.10.
The checksum is also fine.

Attempting to create an HVM cluster with three hosts failed.
Do you know how to handle this?

One thing that caught my attention is that when running `apt update` on a host intended for clustering, the following occurs.
I have never seen a message like “404 Not Found [IP: 172.16.2.100 443]” before. This IP address is the manager's IP address as follows.

Additionally, the `/etc/netplan/` directory on other hosts that haven't deployed the manager remains unchanged. Only the `50-cloud-init.yaml` file exists.

Another concern is that compared to 8.0.9, it seems to take longer for the Manager's WebUI to display after accessing it via HTTPS following deployment.
Based on my experience, it took about 15 minutes or less in 8.0.9, but this time it takes around 30 minutes.