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

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Fredrick Barrett picture Fredrick Barrett · Feb 15, 2020 · Viewed 92.7k times · Source

I'm working on a project in React and ran into a problem that has me stumped.

Whenever I run yarn start I get this error:

TypeError [ERR_INVALID_ARG_TYPE]: The "path" argument must be of type string. Received type undefined

I have no idea why this is happening, if anyone has experienced this I would be grateful.

Answer

EngrEric picture EngrEric · Feb 15, 2020

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!).

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