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 05 Jan 2019 08:53:11 PM JST
gpg:                using RSA key 2056872D8D641200
gpg: Can't check signature: No public key
==> BAD/TAMPERED signature detected! <==