create-react-app: invalid json response body at https://registry.npmjs.org/loose-envify

Question

I'm using Ubuntu 20.04. I've been trying to run create react app using npx for over 2 days switching to different Wifis + Ethernet but I get Invalid json response body at https://registry.npmjs.org/loose-envify all the time.

I thought it was an internet speed connection problem but it wasn't

Installing packages. This might take a couple of minutes.
Installing react, react-dom, and react-scripts with cra-template...

npm ERR! code FETCH_ERROR
npm ERR! errno FETCH_ERROR
npm ERR! invalid json response body at https://registry.npmjs.org/loose-envify reason: Unexpected end of JSON input

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/deestarks/.npm/_logs/2021-04-12T18_55_27_266Z-debug.log

Aborting installation.
  npm install --save --save-exact --loglevel error react react-dom react-scripts cra-template has failed.

Deleting generated file... package.json

Can you share your package.json file? Or is that the issue, it has an error and then gets deleted? What command are you running to create this new React project? — Drew Reese
@DrewReese I don't have a package.json. It gets deleted when the error occurs. And I issue the command with npx create-react-app appname — DeeStarks
And any extra details in the generated log: /home/deestarks/.npm/_logs/2021-04-12T18_55_27_266Z-debug.log? Do you have the required versions of Node/npm installed: create-react-app.dev/docs/getting-started#creating-an-app. — Drew Reese

Ivan Kharkovsky Ivan Kharkovsky · Accepted Answer · 2021-07-14T18:25:35

I had and resolved similar issue here: npm install failed, npm ERR! invalid json response

npm cache clean --force

and

npm cache verify

then

npm i npm@latest -g

and finally, I was able to run

npm i

The similar question was there: npm ERR! Unexpected end of JSON input while parsing near '...registry.npmjs.org/@i'

create-react-app: invalid json response body at https://registry.npmjs.org/loose-envify

2 Answers