意外的字符串连接首选模板结果[i] [0] .lat +'，'+结果[i] [0] .lng

如何解决意外的字符串连接首选模板结果[i] [0] .lat +'，'+结果[i] [0] .lng

怎么了？那我该怎么办??

HereMap.vue

let waypoints = []
      this.map.removeObjects(this.map.getobjects())
      this.directions = []
      waypoints = [this.geocode(start),this.geocode(finish)]
      Promise.all(waypoints).then(result => {
        const markers = []
        for (let i = 0; i < result.length; ++i) {
          params[`waypoint,${i}`] = `${result[i][0].lat  },${  result[i][0].lng}`
          markers.push(new H.map.Marker(result[i][0]))
        }