Errors

meta_yml_conforms_to_known_spec

'' for 'perl' is not a valid version. (requires -> perl) [Validation: 1.4]

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 24 Aug 2015 06:28:34 PM JST
gpg:                using RSA key 97BE5D729A22E4E5
gpg: Can't check signature: No public key