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 Tue 07 Feb 2017 07:39:05 AM JST
gpg:                using DSA key D8B4918C1EC76AC47BA2083D6B838740014CD747
gpg: Can't check signature: No public key