Get in error while trying to download packages

[trung]

I'm just starting to use archlinuxarm, installed through Asahi Linux. After setting everything up, I used pacman to install packages, but every one of them throws errors like:

`error: linux-api-headers: signature from "Arch Linux ARM Build System <builder@archlinuxarm.org>" is unknown trust
:: File /var/cache/pacman/pkg/linux-api-headers-6.10-1-aarch64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)).`

Could you please let me know if there's a way to fix this? I've been trying to follow the guides on forums for the past two days, but it's still not working. Thank you so much.

[solskogen]

Run these two commands before updating.
pacman-key --init
pacman-key --populate archlinuxarm