The error is from the repository and I think the failure is only in the right-handed Debian … also I porobe with ubuntu and it works correctly
Updating currently installed packages, please wait… W: Failed to fetch https://mirror.mva-n.net/mariadb/repo/10.5/debian/dists/buster/InRelease Could not connect to mirror.mva-n.net:443 (220.127.116.11), connection timed out
W: Some index files failed to download. They have been ignored, or old ones used instead.
Debian 10 ( tested on LXC container and VM )
Hestia Control Panel version: