apt update issue...

[bruce]

Hi.

 apt update

produces::
Fetched 52.9 MB in 13s (4140 kB/s)
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
All packages are up to date.
N: Missing Signed-By in the sources.list(5) entry for
'http://mirrors.digitalocean.com/ubuntu'
N: Missing Signed-By in the sources.list(5) entry for
'http://mirrors.digitalocean.com/ubuntu'
N: Missing Signed-By in the sources.list(5) entry for
'http://mirrors.digitalocean.com/ubuntu'
root at ubuntu-s-1vcpu-2gb-nyc1-01-base-174:/#

I've checked the different sites online, but can't find a solution.

Any thoughts/pointers/comments?

thanks


cat "/etc/apt/sources.list.d/ubuntu.sources"
----
Types: deb deb-src
URIs: http://us.archive.ubuntu.com/ubuntu/
Suites: noble noble-updates noble-backports noble-proposed
Components: main restricted universe multiverse
Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpg

Types: deb deb-src
URIs: http://security.ubuntu.com/ubuntu
Suites: noble-security
Components: main restricted universe multiverse
Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpg
-----