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 02 Apr 2016 08:54:00 AM JST
gpg:                using RSA key 1CE1C432117A57D2
gpg: Can't check signature: No public key
==> BAD/TAMPERED signature detected! <==