Already up to date.
==> Making package: php-pear 1:1.10.21-1 (Sun Dec  5 01:55:46 2021)
==> Checking runtime dependencies...
==> Checking buildtime dependencies...
==> Retrieving sources...
  -> Found install-pear-nozlib-1.10.21.phar
  -> Found install-pear-nozlib-1.10.21.phar.sig
==> Validating source files with sha256sums...
    install-pear-nozlib-1.10.21.phar ... Passed
    install-pear-nozlib-1.10.21.phar.sig ... Skipped
==> Verifying source file signatures with gpg...
    install-pear-nozlib-1.10.21.phar ... FAILED (unknown public key 72A321BAC245F175)
==> ERROR: One or more PGP signatures could not be verified!