sooo我正在学习ExpressJS课程，我去了网站，去了“Hello World”部分，我复制并粘贴了下面给定的代码

const express = require('express')
const app = express()
const port = 3000

app.get('/', (req, res) => {
  res.send('Hello World!')
})

app.listen(port, () => {
  console.log(`Example app listening at http://localhost:${port}`)
})

是的。正是如此

但是当我尝试用node运行它时，我得到了以下错误

C:\Users\blue fury\my-express-server\app.js:1
��c


SyntaxError: Invalid or unexpected token
    at wrapSafe (internal/modules/cjs/loader.js:979:16)
    at Module._compile (internal/modules/cjs/loader.js:1027:27)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
    at Module.load (internal/modules/cjs/loader.js:928:32)
    at Function.Module._load (internal/modules/cjs/loader.js:769:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:72:12)
    at internal/main/run_main_module.js:17:47```
I tried searching google but found only one thread on github which just says to restart everything (I tried, did not work)