ArchLinux "error: required key missing from keyring"
downloading required keys...
error: key "C847B6AEB0544167" could not be looked up remotely
error: required key missing from keyring
error: failed to commit transaction (unexpected error)
Errors occurred, no packages were upgraded.
sudo pacman -S archlinux-keyring
successful!!!
or not , try
pacman-key --populate archlinux
(完)