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 Thu 11 Oct 2018 11:53:56 PM JST
gpg:                using RSA key 0315AA512CBBA832D564940A2B288E66359EAC76
gpg: Can't check signature: No public key