Keyring error while downloading manjaro update

I’m getting this error when downloading latest 1.5GB update. What does this mean, what can be done? It’s kinda scarry.

You probably didn’t update the system in quite some time. Simply reboot and report if something is off after that.

It was freshly installed, maybe 1-2 days before update.
Fresh system, update comes along - keyring error. I still updated and don’t see any problems yet, but why did this error even appear, what does this mean and what to do untill it got out of hand?

Fresh install from a new .iso or an older one? In any case, here are some steps that should help get you going. In terminal:

sudo rm -fr /etc/pacman.d/gnupg          (remove old keys)
sudo pacman -Sy gnupg archlinux-keyring manjaro-keyring    (reinstalls keyrings)
sudo pacman-key --init            (initialize pacman keyring)
sudo pacman-key --populate archlinux manjaro     (loads the signature keys)
sudo pacman-key --refresh-keys        (refresh and update signature keys)
sudo pacman -Syyu                      (Update installation)

Fresh downloaded. It was downloaded and installed(with checksum check and etc) and then updated. Total less than 5 days.