TypeError [ERR_INVALID_ARG_TYPE]: The "path" argument must be of type string. Received type undefined raised when starting react app

Solution 1:

To fix this issue simply upgrade react-scripts package (check latest version with npm info react-scripts version):

1. Replace in your package.json "react-scripts": "^3.x.x" with "react-scripts": "^3.4.1" (or the latest available version)
2. (optional for some) Delete your node_modules folder
3. Run npm install or yarn install

Some people reported that this issue was caused by running npm audit fix (avoid it!).

Solution 2:

If you have ejected, this is the proper way to fix this issue:

find this file config/webpackDevServer.config.js and then inside this file find the following line:

app.use(noopServiceWorkerMiddleware());

You should change it to:

app.use(noopServiceWorkerMiddleware('/'));

For me(and probably most of you) the service worker is served at the root of the project. In case it's different for you, you can pass your base path instead.