perfeitoan [1] filed a deletion request for iceweasel [2]: Hey folks I tried to Install this app in my Arch Linux and always when i try to install via makepkg -si the app repply me this message : iceweasel_53.0-1.branding.tar.xz ... FAILED (unknown public key E6974752F9704456) ==> ERROR: One or more PGP signatures could not be verified! How to fix this !!! This must be open [1] https://aur.archlinux.org/account/perfeitoan/ [2] https://aur.archlinux.org/pkgbase/iceweasel/