Added ReplyError as nil in the response of the StringQuery if missing

analyzers/analyzers.go

@@ -162,6 +162,9 @@ func (aS *AnalyzerService) V1StringQuery(args *QueryArgs, reply *[]map[string]in
 		if dur, err := utils.IfaceAsDuration(obj.Fields[utils.RequestDuration]); err == nil {
 			obj.Fields[utils.RequestDuration] = dur.String()
 		}
+		if val, has := obj.Fields[utils.ReplyError]; !has || len(utils.IfaceAsString(val)) == 0 {
+			obj.Fields[utils.ReplyError] = nil
+		}
 		if lCntFltrs != 0 {
 			repDP, err := unmarshalJSON(rep)
 			if err != nil {

analyzers/analyzers_test.go

@@ -278,6 +278,7 @@ func TestAnalyzersV1Search(t *testing.T) {
 		"Reply":              json.RawMessage(`"Pong"`),
 		"RequestSource":      "127.0.0.1:5566",
 		"RequestStartTime":   t1.Add(-24 * time.Hour).UTC().Format(time.RFC3339),
+		"ReplyError":         nil,
 	}}
 	reply = []map[string]interface{}{}
 	if err = anz.V1StringQuery(&QueryArgs{HeaderFilters: utils.RequestDuration + ":>=" + strconv.FormatInt(int64(time.Hour), 10)}, &reply); err != nil {