Unable to update APT due to strange error

[Quokka]

My YunoHost server

Hardware: VPS bought online / Old laptop or computer / Raspberry Pi (specify version, 0 to 4) at home / Internet Cube with VPN / Other ARM board / …
YunoHost version: 11.0.9.9
I have access to my server : Through SSH | through the webadmin | direct access via keyboard / screen | …
Are you in a special context or did you perform some particular tweaking on your YunoHost instance ? : no / yes
If yes, please explain:

Description of my issue

So I tried to update my Yunohost system for the first time today, but to my confusion and frustration, it errors out and gives me this message:

I have no idea why it is giving me this message and I am unsure how to fix it. All the “problematic” lines seem to be all my APT sources, so that narrows down nothing for me. I’m really in a rut right now and would like some help or advice on what is going on.

[Aleks]

Supposedly there should be other error messages in the history in the webadmin…

We can also check what’s the actual message running sudo apt update from the CLI

[Quokka]

After running the CLI, it did give me this error:

Updating from such a repository can’t be done securely, and is therefore disabled by default

The repository in question is packages.sury.org, which my server could not find any public keys to verify it.

[Aleks]

In that case this is a recurring issue these day because Sury’s key expired

You can update it with:

wget -nv -O - "https://packages.sury.org/php/apt.gpg" | sudo apt-key add -

[Quokka]

I tried that all and all that was spit out at me was

ERROR: Could not open HSTS store at ‘/root/.wget-hsts’. HSTS will be disabled.

And then nothing was downloaded. Now I’m even more befuddled and am just wondering if I’m on a bad luck spree…

[Quokka]

Well, after rebooting the system, it seems that now the updates go through without any friction. Thank you so much for the advice!