use Modern::Perl;
use CGI qw ( -utf8 );
-use C4::Auth;
-use C4::Output;
+use C4::Auth qw( get_template_and_user );
+use C4::Output qw( output_html_with_http_headers );
-use C4::Biblio;
-use C4::Serials;
+use C4::Serials qw( ModSubscriptionHistory ModSubscription GetSubscriptionHistoryFromSubscriptionId GetSubscription );
use Koha::Biblios;
-use Koha::DateUtils;
+use Koha::DateUtils qw( output_pref );
my $input = CGI->new;
my ($template, $loggedinuser, $cookie, $flags) = get_template_and_user( {