ET02_SignInWithEthereum 代码问题

[yeyuqwer]

const provider = new ethers.Web3Provider(window.ethereum)

使用 Web3Provider 创建 provider 时，浏览器会报错

aslkfdjindex.js:13 Uncaught (in promise) TypeError: ethers.Web3Provider is not a constructor
    at HTMLButtonElement.onClickHandler