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 Fri 01 Sep 2017 08:18:47 AM JST
gpg:                using RSA key A498047E5D69B960
gpg: Can't check signature: No public key
==> BAD/TAMPERED signature detected! <==