React + Node.js === 用 `res.sendFile(path.join(__dirname + '/index.html'))` 拿首頁 ![](https://i.imgur.com/3LFNbWb.jpg) 不管路徑設置 `/book` or `/index.html/book` 都會出現如下錯誤 ![](https://i.imgur.com/QjTcTfs.jpg) 這是首頁畫面 ![](https://i.imgur.com/GGAgCDd.jpg) 錯誤資訊 ![](https://i.imgur.com/dt2wXP0.jpg) ![](https://i.imgur.com/4t81S7s.jpg)