Trace begun at /tmp/makholm/perl/lib/perl5/Plack/Middleware/StackTrace.pm line 22
        Plack::Middleware::StackTrace::__ANON__('body must be bytes and should not contain wide characters (UTF-8 strings). at /tmp/makholm/perl/lib/perl5/Plack/Middleware/StackTrace.pm line 27^J') called at /usr/share/perl/5.10/Carp.pm line 44
        Carp::croak('body must be bytes and should not contain wide characters (UTF-8 strings).') called at /tmp/makholm/perl/lib/perl5/Plack/Middleware/Lint.pm line 119
        Plack::Middleware::Lint::validate_res('Plack::Middleware::Lint=HASH(0x1649370)', 'ARRAY(0x24926c8)') called at /tmp/makholm/perl/lib/perl5/Plack/Middleware/Lint.pm line 25
        Plack::Middleware::Lint::call('Plack::Middleware::Lint=HASH(0x1649370)', 'HASH(0x21c5798)') called at /tmp/makholm/perl/lib/perl5/Plack/Component.pm line 39
        Plack::Component::__ANON__('HASH(0x21c5798)') called at /tmp/makholm/perl/lib/perl5/Plack/Middleware/StackTrace.pm line 27
        Plack::Middleware::StackTrace::__ANON__ at /usr/share/perl5/Try/Tiny.pm line 71
        eval {...} at /usr/share/perl5/Try/Tiny.pm line 67
        Try::Tiny::try('CODE(0x21eaa48)', 'Try::Tiny::Catch=REF(0x2291568)') called at /tmp/makholm/perl/lib/perl5/Plack/Middleware/StackTrace.pm line 27
        Plack::Middleware::StackTrace::call('Plack::Middleware::StackTrace=HASH(0x2291088)', 'HASH(0x21c5798)') called at /tmp/makholm/perl/lib/perl5/Plack/Component.pm line 39
        Plack::Component::__ANON__('HASH(0x21c5798)') called at /tmp/makholm/perl/lib/perl5/Plack/Middleware/AccessLog.pm line 21
        Plack::Middleware::AccessLog::call('Plack::Middleware::AccessLog=HASH(0x228d888)', 'HASH(0x21c5798)') called at /tmp/makholm/perl/lib/perl5/Plack/Component.pm line 39
        Plack::Component::__ANON__('HASH(0x21c5798)') called at /tmp/makholm/perl/lib/perl5/Plack/Middleware/ContentLength.pm line 10
        Plack::Middleware::ContentLength::call('Plack::Middleware::ContentLength=HASH(0x2291880)', 'HASH(0x21c5798)') called at /tmp/makholm/perl/lib/perl5/Plack/Component.pm line 39
        Plack::Component::__ANON__('HASH(0x21c5798)') called at /tmp/makholm/perl/lib/perl5/Plack/Util.pm line 134
        eval {...} at /tmp/makholm/perl/lib/perl5/Plack/Util.pm line 134
        Plack::Util::run_app('CODE(0x22d54a0)', 'HASH(0x21c5798)') called at /tmp/makholm/perl/lib/perl5/HTTP/Server/PSGI.pm line 144
        HTTP::Server::PSGI::handle_connection('HTTP::Server::PSGI=HASH(0x22983c0)', 'HASH(0x21c5798)', 'IO::Socket::INET=GLOB(0x21cf800)', 'CODE(0x22d54a0)') called at /tmp/makholm/perl/lib/perl5/HTTP/Server/PSGI.pm line 105
        HTTP::Server::PSGI::accept_loop('HTTP::Server::PSGI=HASH(0x22983c0)', 'CODE(0x2297e80)') called at /tmp/makholm/perl/lib/perl5/HTTP/Server/PSGI.pm line 59
        HTTP::Server::PSGI::run('HTTP::Server::PSGI=HASH(0x22983c0)', 'CODE(0x2297e80)') called at /tmp/makholm/perl/lib/perl5/Plack/Handler/HTTP/Server/PSGI.pm line 14
        Plack::Handler::HTTP::Server::PSGI::run('Plack::Handler::Standalone=HASH(0x1bc56d8)', 'CODE(0x2297e80)') called at /tmp/makholm/perl/lib/perl5/Plack/Loader.pm line 83
        Plack::Loader::run('Plack::Loader=HASH(0x1401118)', 'Plack::Handler::Standalone=HASH(0x1bc56d8)') called at /tmp/makholm/perl/lib/perl5/Plack/Runner.pm line 248
        Plack::Runner::run('Plack::Runner=HASH(0x12ca760)') called at /tmp/makholm/perl/bin/plackup line 10
127.0.0.1 - - [30/Jun/2010 16:13:19] "GET /?method=sum;id=1;params=[2,3,5] HTTP/1.1" 500 3250 "-" "lwp-request/5.834 libwww-perl/5.836"