s3 람다 추가 질문

아래 s3 람다  추가 질문 합니다. 

[이전글]

https://www.inflearn.com/questions/177103

s3 에서 퍼블릭으로 되어있습니다. 아예 thumb로 안올라갑니다. 그런데 어제 테스트했을 때는 올라갔는데 오늘 하려고하니 안들어가네요 

소스와 사진 함께 올립니다.

소스

const express = require('express');
const multer = require('multer');
const path = require('path');
const fs = require('fs');
const AWS = require('aws-sdk');
const multerS3 = require('multer-s3');

const { Post, Hashtag } = require('../models');
const { isLoggedIn } = require('./middlewares');

const router = express.Router();

try {
    fs.readdirSync('uploads');
} catch (error) {
    console.error('uploads 폴더가 없어 uploads 폴더를 생성합니다.');
    fs.mkdirSync('uploads');
}

AWS.config.update({
    accessKeyId: process.env.S3_ACCESS_KEY_ID,
    secretAccessKey: process.env.S3_SECRET_ACCESS_KEY,
    region: 'ap-northeast-2',
});

const upload = multer({
    storage: multerS3({
        s3: new AWS.S3(),
        bucket: 'th-s3-storage',
        key(req, file, cb) {
            cb(null, `original/${Date.now()}${path.basename(file.originalname)}`);
        }
    }),
    limits: { fileSize: 5 * 1024 * 1024 },
});

/*
const upload = multer({
    storage: multer.diskStorage({
        destination(req, file, cb) {
            cb(null, 'uploads/');
        },
        filename(req, file, cb) {
            const ext = path.extname(file.originalname);
            cb(null, path.basename(file.originalname, ext) + Date.now() + ext);
        },
    }),
    limits: { filesSize: 5 * 1024 * 1024 },    
});
*/

router.post('/img', isLoggedIn, upload.single('img'), (req, res) => {
    console.log(req.file);
    /** multer */
    //res.json({ url: `/img/${req.file.filename}` });
    
    /** multer-s3 */
    //res.json({ url: req.file.location });

    /** multer-s3 lamda */
    const originalUrl = req.file.location;
    const url = originalUrl.replace(/\/original\//, '/thumb/');
    res.json({ url, originalUrl });
});

const upload2 = multer();

router.post('/', isLoggedIn, upload2.none(), async (req, res, next) => {
    try {
        const post = await Post.create({
           content: req.body.content,
           img: req.body.url,
           UserId: req.user.id, 
        });

        const hashtags = req.body.content.match(/#[^\s#]+/g);
        if (hashtags) {
            const result = await Promise.all(
                hashtags.map(tag => {
                    return Hashtag.findOrCreate({
                        where: { title: tag.slice(1).toLowerCase() },
                    })
                }),
            );
            await post.addHashtags(result.map(r => r[0]));
        }
        res.redirect('/');
    } catch (error) {
        console.error(error);
        next(error);
    }
});

module.exports = router;