Crash finishing checkout

[thunder-]

• Unaltered Interchange 6 Demo Shop
• Clicked on a random product to end up in basket
• Continued to checkout
• Filled out my name + address
• Shipping page is a bit odd with the data it shows
• Continued the process
• Marked free removing price tag
• Cash on delivery payment
• Clicked on the huge order confirm button ...

Runtime Error
runtime error

Warning caught during route execution: Argument "" isn't numeric in numeric comparison (<=>) at /home/ic6/perl5/perlbrew/perls/perl-5.22.0/lib/site_perl/5.22.0/Number/Format.pm line 870.

/home/ic6/perl5/perlbrew/perls/perl-5.22.0/lib/site_perl/5.22.0/Number/Format.pm around line 870

867     $precision = 2                       unless defined $precision; # default
868 
869     # Determine sign and absolute value
870     my $sign = $number <=> 0;
871     $number = abs($number) if $sign < 0;
872 
873     # format it first

Stack

main in ./bin/app.pl l. 4
Dancer in /home/ic6/perl5/perlbrew/perls/perl-5.22.0/lib/site_perl/5.22.0/Dancer.pm l. 496
Dancer::Handler in /home/ic6/perl5/perlbrew/perls/perl-5.22.0/lib/site_perl/5.22.0/Dancer/Handler.pm l. 209
Dancer::Handler::Standalone in /home/ic6/perl5/perlbrew/perls/perl-5.22.0/lib/site_perl/5.22.0/Dancer/Handler/Standalone.pm l. 38
HTTP::Server::Simple in /home/ic6/perl5/perlbrew/perls/perl-5.22.0/lib/site_perl/5.22.0/HTTP/Server/Simple.pm l. 306
HTTP::Server::Simple in /home/ic6/perl5/perlbrew/perls/perl-5.22.0/lib/site_perl/5.22.0/HTTP/Server/Simple.pm l. 342
HTTP::Server::Simple in /home/ic6/perl5/perlbrew/perls/perl-5.22.0/lib/site_perl/5.22.0/HTTP/Server/Simple.pm l. 450
HTTP::Server::Simple::PSGI in /home/ic6/perl5/perlbrew/perls/perl-5.22.0/lib/site_perl/5.22.0/HTTP/Server/Simple/PSGI.pm l. 103
HTTP::Server::Simple::PSGI in /home/ic6/perl5/perlbrew/perls/perl-5.22.0/lib/site_perl/5.22.0/HTTP/Server/Simple/PSGI.pm l. 103
Dancer::Handler in /home/ic6/perl5/perlbrew/perls/perl-5.22.0/lib/site_perl/5.22.0/Dancer/Handler.pm l. 123
Dancer::Handler in /home/ic6/perl5/perlbrew/perls/perl-5.22.0/lib/site_perl/5.22.0/Dancer/Handler.pm l. 76
Dancer::Handler in /home/ic6/perl5/perlbrew/perls/perl-5.22.0/lib/site_perl/5.22.0/Dancer/Handler.pm l. 113
Try::Tiny in /home/ic6/perl5/perlbrew/perls/perl-5.22.0/lib/site_perl/5.22.0/Try/Tiny.pm l. 104
Dancer::Exception in /home/ic6/perl5/perlbrew/perls/perl-5.22.0/lib/site_perl/5.22.0/Dancer/Exception.pm l. 49
Dancer::Exception in /home/ic6/perl5/perlbrew/perls/perl-5.22.0/lib/site_perl/5.22.0/Dancer/Exception.pm l. 37
Dancer::Handler in /home/ic6/perl5/perlbrew/perls/perl-5.22.0/lib/site_perl/5.22.0/Dancer/Handler.pm l. 107
Dancer::Object in /home/ic6/perl5/perlbrew/perls/perl-5.22.0/lib/site_perl/5.22.0/Dancer/Object.pm l. 18
Dancer::Error in /home/ic6/perl5/perlbrew/perls/perl-5.22.0/lib/site_perl/5.22.0/Dancer/Error.pm l. 40
Dancer::Error in /home/ic6/perl5/perlbrew/perls/perl-5.22.0/lib/site_perl/5.22.0/Dancer/Error.pm l. 289