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 Sat 14 Nov 2015 02:08:02 AM JST
gpg:                using RSA key C50CDFAE1EF9F138
gpg: Can't check signature: No public key
==> BAD/TAMPERED signature detected! <==