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 17 Jan 2017 09:42:31 PM JST
gpg:                using RSA key 781BB7071C6BF648EAEB08A1100D5BFB5166E005
gpg: Can't check signature: No public key