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 25 Apr 2016 12:13:41 PM JST
gpg:                using RSA key A498047E5D69B960
gpg: Can't check signature: No public key
==> BAD/TAMPERED signature detected! <==