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 21 Feb 2018 01:11:44 PM JST
gpg:                using RSA key 317990A14597A1FCF82D953AB5AF5F8925926609
gpg: Can't check signature: No public key