jhuliana@jhuliana:~/proyecto_React$ npx create-react-app my-app

Creating a new React app in /home/jhuliana/proyecto_React/my-app.

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

npm ERR! code ERR_SOCKET_TIMEOUT
npm ERR! errno ERR_SOCKET_TIMEOUT
npm ERR! request to https://registry.npmjs.org/copy-concurrently/-/copy-concurrently-1.0.5.tgz failed, reason: Socket timeout

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/jhuliana/.npm/_logs/2021-09-01T15_08_43_921Z-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
Deleting my-app/ from /home/jhuliana/proyecto_React
Done.
npm ERR! code 1
npm ERR! path /home/jhuliana/proyecto_React
npm ERR! command failed
npm ERR! command sh -c create-react-app "my-app"

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/jhuliana/.npm/_logs/2021-09-01T15_08_58_580Z-debug.log