Errors

valid_signature

Old SIGNATURE detected. Please inform the module author to regenerate SIGNATURE using Module::Signature version 0.82 or newer.
gpg: Signature made Wed 29 Apr 2015 02:24:45 AM JST
gpg:                using DSA key 31F9562596406EA0
gpg: Can't check signature: No public key
==> BAD/TAMPERED signature detected! <==