npm start error with create-react-app

Question

I have a project who I didn\'t touch for 2 weeks. I take it back and now when I try to run npm start I got this error.

> react-scripts start
         


        

Answer 1

add environment variables in windows

1. C:\WINDOWS\System32
2. C:\Program Files\nodejs
3. C:\Program Files\nodejs\node_modules\npm\bin
4. C:\WINDOWS\System32\WindowsPowerShell\v1.0
5. C:\Users{your system name without curly braces}\AppData\Roaming\npm

these 5 are must in path.

and use the latest version of node.js

Answer 2

I have created react project locally. This reason of occurring this problem (for me) was that I didn't use sudo before npm and it needs root access (

> sudo npm start

PS1: For windows users, the powershell or command line should be run as administrator)

PS2: If use want to solve the root access issue, you can see this post.