这里有很多答案确实可以解决问题，但是自从我问这个问题以来，我找到的最简单的方法是添加npm包

A lot of answers here do actually solve the issue but the simplest way I have found since I asked this question is to add npm package serve to your dependencies.

yarn add serve或npm i serve

，然后将启动脚本替换为以下内容:

and then replace your start script with the following:

"scripts": {
    "start": "serve -s build",
}

这实际上是从create-react-app docs

This is actually straight out of the create-react-app docs