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 16 Oct 2015 06:37:51 PM JST
gpg:                using RSA key 97BE5D729A22E4E5
gpg: Can't check signature: No public key
==> BAD/TAMPERED signature detected! <==