Error: Unknown aggregation type: stringFirst

[Jaymin-adzmedia]

Hello

I am using timeseries query. I also want few fields value. Dimension is not supporting in timeseries query so i am using aggregations[]. I using below query to execute in druid endpoint server.
which is working but not in node JS.

"queryType": "timeseries", "dataSource": "dsp_report_full_new", "granularity": "hour", "aggregations": [ { "type": "count", "name": "rows" }, { "type": "stringFirst", "name": "country", "fieldName": "country" }, { "type": "stringFirst", "name": "campid", "fieldName": "campid" }, { "type": "doubleSum", "name": "impressions", "fieldName": "impressions" }, { "type": "doubleSum", "name": "conversions", "fieldName": "conversions" }, { "type": "doubleSum", "name": "wins", "fieldName": "wins" }, { "type": "doubleSum", "name": "spend", "fieldName": "spend" }, { "type": "doubleSum", "name": "bids", "fieldName": "bids" }, { "type": "doubleSum", "name": "payout", "fieldName": "payout" }, { "type": "doubleSum", "name": "pixels", "fieldName": "pixels" }, { "type": "doubleSum", "name": "OneHplusOld", "fieldName": "OneHplus" }, { "type": "doubleSum", "name": "clicks", "fieldName": "clicks" } ], "postAggregations": [ { "type": "arithmetic", "name": "cr", "fn": "*", "fields": [ { "type": "constant", "name": "hundred", "value": 100 }, { "type": "arithmetic", "name": "cbyp", "fn": "/", "fields": [ { "type": "fieldAccess", "name": "conversions", "fieldName": "conversions" }, { "type": "fieldAccess", "name": "pixels", "fieldName": "pixels" } ] } ] }, { "type": "arithmetic", "name": "ctr", "fn": "*", "fields": [ { "type": "constant", "name": "hundred", "value": 100 }, { "type": "arithmetic", "name": "cbyp", "fn": "/", "fields": [ { "type": "fieldAccess", "name": "clicks", "fieldName": "clicks" }, { "type": "fieldAccess", "name": "impressions", "fieldName": "impressions" } ] } ] }, { "type": "arithmetic", "name": "OneHplus", "fn": "*", "fields": [ { "type": "constant", "name": "hundred", "value": 100 }, { "type": "arithmetic", "name": "OneHdividedByConversions", "fn": "/", "fields": [ { "type": "fieldAccess", "name": "OneHplusOld", "fieldName": "OneHplusOld" }, { "type": "fieldAccess", "name": "conversions", "fieldName": "conversions" } ] } ] }, { "type": "arithmetic", "name": "clear_rate", "fn": "/", "fields": [ { "type": "fieldAccess", "name": "bids", "fieldName": "bids" }, { "type": "fieldAccess", "name": "impressions", "fieldName": "impressions" } ] }, { "type": "arithmetic", "name": "win_rate", "fn": "/", "fields": [ { "type": "fieldAccess", "name": "bids", "fieldName": "bids" }, { "type": "fieldAccess", "name": "wins", "fieldName": "wins" } ] }, { "type": "arithmetic", "name": "ecpa", "fn": "/", "fields": [ { "type": "fieldAccess", "name": "spend", "fieldName": "spend" }, { "type": "fieldAccess", "name": "conversions", "fieldName": "conversions" } ] }, { "type": "arithmetic", "name": "ecpm", "fn": "/", "fields": [ { "type": "fieldAccess", "name": "spend", "fieldName": "spend" }, { "type": "arithmetic", "name": "per1000impressions", "fn": "/", "fields": [ { "type": "fieldAccess", "name": "impressions", "fieldName": "impressions" }, { "type": "constant", "name": "thousand", "value": 1000 } ] } ] } ], "intervals": [ "2019-11-11T00:00:00.000Z/2019-11-11T23:59:59.059Z" ], "filter": { "type": "and", "fields": [ { "type": "in", "dimension": "campid", "values": [ 2016] } ] }

JS code : expReportQ.aggregation('stringFirst', 'campid', 'campid');

Please help me to fix node js issue.