Hello guys!
I have done a fresh install of Arch Linux with KDE. The first thing to do was downloading Librewolf but there is an issue. I used an installation way that is without an AUR helper. And the package named librewolf-bin. System updated, git command executed, changed directory to librewolf-bin, executed the makepkg -si. But it couldn't verify PGP signatures.
-> Downloading librewolf-126.0-1-linux-x86_64-package.tar.bz2.sig...
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 566 100 566 0 0 1257 0 --:--:-- --:--:-- --:--:-- 1260
==> Validating source files with sha256sums...
source ... Passed
default192x192.png ... Passed
librewolf.desktop ... Passed
==> Validating source_x86_64 files with sha256sums...
librewolf-126.0-1-linux-x86_64-package.tar.bz2 ... Passed
librewolf-126.0-1-linux-x86_64-package.tar.bz2.sig ... Skipped
==> Verifying source file signatures with gpg...
librewolf-126.0-1-linux-x86_64-package.tar.bz2 ... FAILED (unknown public key 8A74EAAF89C17944)
==> ERROR: One or more PGP signatures could not be verified!
You can go to https://keyserver.ubuntu.com in your browser and then use the Search key option and then download the public key (pub entry). Then use gpg --import 0000000000111111112222222222222.asc where 0000000000111111112222222222222.asc is the name of the downloaded public key file.