失败文件名null

handle/api/req_sync_alarm_file.go

@@ -94,7 +94,7 @@ func (s *ReqSyncAlarmFile) Handle(request ziface.IRequest) {
 				"reqId":    reqId,
 				"result":   "fail",
 				"resDesc":  err.Error(),
-				"fileName": "",
+				"fileName": "null",
 			}))
 			return
 		}