MetaCPAN API error

gistfile1.txt

use strict;
use warnings;

use Data::Dumper qw(Dumper);
use HTTP::Tiny;
use JSON qw(to_json);
my $ua = HTTP::Tiny->new();
my $query_json = to_json {
        query => {
            match_all => {},
        },
        filter => {
            and => [
                { term => { status => 'latest', } },
                {
                    "range" => {
                        "date" => {
                            "from" => "2010-06-05T00:00:00",
                            "to" => "2011-06-05T00:00:00",
                        },
                    },
                },
            ]
        },
        #fields => ["name", "author", "status", "date", "abstract"],
        sort => "date:desc",
        size => 2,
};

print Dumper $ua->request(
    'POST',
    'http://api.metacpan.org/v0/release/_search',
    {
            headers => { 'Content-Type' => 'application/json' },
            content => $query_json,
     }
);


$VAR1 = {
          'success' => '',
          'status' => '500',
          'headers' => {
                         'content-length' => '987',
                         'server' => 'nginx/1.6.2',
                         'content-type' => 'text/plain; charset=UTF-8',
                         'date' => 'Wed, 22 Oct 2014 15:03:49 GMT',
                         'connection' => 'keep-alive',
                         'surrogate-control' => 'no-store'
                       },
          'url' => 'http://api.metacpan.org/v0/release/_search',
          'reason' => 'Internal Server Error',
          'protocol' => 'HTTP/1.1',
          'content' => 'SearchPhaseExecutionException[Failed to execute phase [query], total failure; shardFailures {[MviAwe4BT1-a4OcbrYWb0g][cpan_v1][0]: SearchParseException[[cpan_v1][0]: from[-1],size[-1]: Parse Failure [Failed to parse source [{"sort":"date:desc","filter":{"and":[{"term":{"status":"latest"}},{"range":{"date":{"from":"2010-06-05T00:00:00","to":"2011-06-05T00:00:00"}}}]},"size":2,"query":{"match_all":{}}}]]]; nested: SearchParseException[[cpan_v1][0]: from[-1],size[-1]: Parse Failure [No mapping found for [filter] in order to sort on]]; }{[MviAwe4BT1-a4OcbrYWb0g][cpan_v1][4]: SearchParseException[[cpan_v1][4]: from[-1],size[-1]: Parse Failure [Failed to parse source [{"sort":"date:desc","filter":{"and":[{"term":{"status":"latest"}},{"range":{"date":{"from":"2010-06-05T00:00:00","to":"2011-06-05T00:00:00"}}}]},"size":2,"query":{"match_all":{}}}]]]; nested: SearchParseException[[cpan_v1][4]: from[-1],size[-1]: Parse Failure [No mapping found for [filter] in order to sort on]]; }]'
        };