Aggregation not working in Logstash input elasticsearch filter

Hi Team,
I am trying to do a aggregation using ES query. Query is giving a result in develper tool but when I use it in logstash config file I am not getting a actual result. I am getting only few selected field, at least I expect all the selected fields. Where as I observed that filter primary_market= "XY" and c_id="LS" working correctly. I am getting only document for that filter but aggregation is not working.

input {
       elasticsearch {
               hosts => "${ELK_SERVER}"
               index => "idx_20201014"
               user => "${ELK_USER}"
               password => "${ELK_PASS}"
               query => '{"size" : 0,"query" : {"bool" : {"must" : [{"term" : {"market" : {"value" : "XY"}}},
                                           {"term" : {"c_id" : {"value" : "LS"}}}]}},
 "_source" :{ "includes" : ["c_id","market","amount","quantity"]},
 "aggregations" : {"groupby" : {"composite" : {"size" : 10,
        "sources" : [{"c_id_gp" : {"terms" : {"field" : "c_id"}}},
                     {"date_gp" : {"terms" : {"field" : "date"}}},
                     {"market_gp" : {"terms" : {"field" : "market"}}}
                    ]},
      "aggregations" : {"amount_gp" : {"sum" : {"field" : "amount"}},
                        "quantity_gp" : {"sum" : {"field" : "quantity"}}}
    }}}'
       }
 }
 output {
        stdout{}
 }

Output I am getting like this which is all the fields from index

{
    "amount" => 10037.2167,
        "clientid" => "LS"
}
{
    "amount" => 1238.199706,
        "clientid" => "LS"
}