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 12 Feb 2018 07:53:16 PM JST
gpg:                using RSA key 0ECC8BC6D0A2E9B93BA417267FBEE8DF3A9E4AA5
gpg: Can't check signature: No public key