nodejs爬取圖片保存到本地創(chuàng)建目錄時(shí)報(bào)錯(cuò)

如題
比如url數(shù)組已知，要把圖片保存到相應(yīng)的路徑下，怎么操作才會(huì)讓mkdirp 不會(huì)報(bào)錯(cuò)？
`
urlArr = [ {

"src": "pano/l7YVJoPwfRnws8VC/pano.tiles/mres_u/l2/5/l2_u_5_3.jpg"

},
{

"src": "pano/l7YVJoPwfRnws8VC/pano.tiles/mres_u/l2/5/l2_u_5_4.jpg"

},
{

"src": "pano/l7YVJoPwfRnws8VC/pano.tiles/mres_u/l2/5/l2_u_5_5.jpg"

},
{

"src": "pano/POWppnlEIY6KHZOv/pano.tilesmres_b/l1/1/l1_b_1_1.jpg"

},
{

"src": "pano/POWppnlEIY6KHZOv/pano.tilesmres_b/l1/1/l1_b_1_2.jpg"}

]
`
想保存到對(duì)應(yīng)的目錄下 如"pano/l7YVJoPwfRnws8VC/pano.tiles/mres_u/l2/5/"
報(bào)錯(cuò)截圖：

/**
 * Created by huqi on 2018/1/7.
 */
'use strict'

const A = 'mres';
const B = ["b","d","f","l","r","u"];
const C = ["l1","l2"];
const D = ["1","2"];
const E = ["1","2","3","4","5"];
const url = 'http://h5.trando9.cn/84/';
const loadingPath = ['pano/1Tt5Fd55nNnj2M8m/pano.tiles/','pano/l7YVJoPwfRnws8VC/pano.tiles/','pano/POWppnlEIY6KHZOv/pano.tiles/','pano/QrVu3N86WiSPGby4/pano.tiles/','pano/W16F80cNxmgjgk8q/pano.tiles/','pano/Wh3eRlcuEZ4011q2/pano.tiles/','pano/Yi1d52W1jWH6ScJP/pano.tiles/','pano/ZN2Ua6EOyImVgKGd/pano.tiles/'];
const manifest = [];

var fs = require('fs');
var request = require('request');
var cheerio = require('cheerio');
var mkdirp = require('mkdirp');

for (let path in loadingPath){
    manifest.push({src:loadingPath[path]+'thumb.jpg'});
    manifest.push({src:loadingPath[path]+'preview.jpg'});
    for(let i in B){
        // for (let j in C){
        for(let k in D){
            for(let l in D){
                // console.log(`${A}_${B[i]}/${C[0]}/${D[k]}/${C[0]}_${B[i]}_${D[k]}_${D[l]}`);
                manifest.push({src:loadingPath[path]+`${A}_${B[i]}/${C[0]}/${D[k]}/${C[0]}_${B[i]}_${D[k]}_${D[l]}.jpg`});

            }
        }
        for(let m in E) {
            for (let j in E) {

                // console.log(`${A}_${B[i]}/${C[1]}/${E[m]}/${C[1]}_${B[i]}_${E[m]}_${E[j]}`);
                manifest.push({src:loadingPath[path]+`${A}_${B[i]}/${C[1]}/${E[m]}/${C[1]}_${B[i]}_${E[m]}_${E[j]}.jpg`});


            }
        }
    }
}

request('http://h5.trando9.cn/84', function (error, response, body) {
    console.log(response.statusCode)
    if (!error && response.statusCode == 200) {
        //開(kāi)始下載
        var i = 0 ;

       var  timer =   setInterval(function(){
           console.log(manifest[i].src.substring(0, manifest[i].src.lastIndexOf('\/') + 1));
           mkdirp( manifest[i].src.substring(0,manifest[i].src.lastIndexOf('\/')+1), function (err) {
               if (err) console.error(err)
               else console.log('pow!')
           });
            request({  url: url + manifest[i].src, timeout: 1000 * 3600 })
                .on('error', function (err) {
                    console.log(err);
                })
                .pipe(fs.createWriteStream( manifest[i].src));
            console.log('已下載：', manifest[i].src, i);
            if(i< manifest.length-1){
                i++;
            }else{
                clearInterval(timer)
                return
            }
        },200)


    } else {
        console.log(error)
    }
});