Errors

use_warnings

Graph::Maker::Beineke, Graph::Maker::BiStar, Graph::Maker::BinaryBeanstalk, Graph::Maker::BinomialTree, Graph::Maker::FibonacciTree, Graph::Maker::GosperIsland, Graph::Maker::Hanoi, Graph::Maker::HexGrid, Graph::Maker::Johnson, Graph::Maker::Keller, Graph::Maker::Kneser, Graph::Maker::KnightGrid, Graph::Maker::NoughtsAndCrosses, Graph::Maker::Petersen, Graph::Maker::QuartetTree, Graph::Maker::RookGrid, Graph::Maker::TwinAlternateAreaTree, Graph::Maker::TwindragonAreaTree

valid_signature

Old SIGNATURE detected. Please inform the module author to regenerate SIGNATURE using Module::Signature version 0.82 or newer.
gpg: Signature made Sun 10 Dec 2017 04:28:44 PM JST
gpg:                using RSA key F8D0B4E7D2D21191
gpg: Can't check signature: No public key