I had an Arch implementation on a Raspberry Pi which was working OK (kernel 4.14.74-1-ARCH), but decided to update.
During the process I got an error message about keys (unfortunately I don't have detail) but this prompted me to run
`pacman-key --init`
Now whenever I try to upgrade I get a string of error messages like
File /var/cache/pacman… is corrupted (invalid or corrupted package (PGP signature)).
Did I do the wrong thing? Is this recoverable?
This is not a big deal, I have a relatively recent backup but I would like to understand.