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#!~/perl5/perlbrew/perls/perl-5.28.1/bin/perl
use Modern::Perl;
use WWW::Scraper::ISBN;
...
    print $record->error;
}

Cannot start LOC query session.
isbn.nu website appears to be unavailable.

sub search {
    my ($self,$isbn) = @_;
    my %data;
...
    eval { $mech->get( $post_url ) };
    return $self->handler("isbn.nu website appears to be unavailable."
+)
        if($@ || !$mech->success() || !$mech->content());