I am newbie to React and trying to build my first React App. My App was running fine till last night. When I open my project in the morning and ran npm start or yarn start command, it gave me error - ***ERR! code ELIFECYCLE***

I tried to close app and tried to run command again as per one of the solution given in the forum. But, that didn't work.

> 
> " \*react-scripts start
> 
> 
> 'react-scripts' is not recognized as an internal or external command,
>  operable program or batch file.
> 
> 
> npm ERR! code ELIFECYCLE
> 
> 
> npm ERR! errno 1
> 
> 
> npm ERR! my-portfolio@0.1.0 start: `react-scripts start`
> 
> 
> npm ERR! Exit status 1
> 
> 
> npm ERR!
> 
> 
> npm ERR! Failed at the my-portfolio@0.1.0 start script.
> 
> 
> npm ERR! This is probably not a problem with npm. There is likely
>  additional logging output above.
> 
> 
> "\*
> 
> 
> 

Thank you in advance!