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 07 Jun 2017 12:05:39 PM JST
gpg:                using RSA key 5B97C39045846032
gpg: Can't check signature: No public key
==> BAD/TAMPERED signature detected! <==