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 Mon 05 Mar 2018 02:03:31 PM JST
gpg:                using RSA key 317990A14597A1FCF82D953AB5AF5F8925926609
gpg: Can't check signature: No public key