Error npm ERR! code FETCH_ERROR npm ERR! errno FETCH_ERROR npm ERR! invalid JSON response body when installing reactjs
Error: npm ERR! code FETCH_ERROR npm ERR! errno FETCH_ERROR npm ERR! invalid json response body when installing reactjs ## Introduction When learning ReactJS, you may encounter the `npm ERR!...
Error: npm ERR! code FETCH_ERROR npm ERR! errno FETCH_ERROR npm ERR! invalid json response body when installing reactjs
Introduction
When learning ReactJS, you may encounter the npm ERR! code FETCH_ERROR error that appears when trying to install React using the command npx create-react-app. This article will help you understand this issue and provide solutions for resolving it.
Description of the Problem
When attempting to run the command npx create-react-app {project_name}, you receive the following error message:
npm ERR! code FETCH_ERROR
npm ERR! errno FETCH_ERROR
npm ERR! invalid json response body at https://registry.npmjs.org/@types%2fsemver reason: Invalid response body while trying to fetch https://registry.npmjs.org/@types%2fsemver: EBUSY: resource busy or locked, rename 'C:\Users\AGUS\AppData\Local\npm-cache\_cacache\tmp\d5e89a99' -> 'C:\Users\AGUS\AppData\Local\npm-cache\_cacache\content-v2\sha512\5f\16\d22537befb8a38d3af73438bd2409a960900a502346287a0a0fa17784814bd2664f39eeb0107aa02ac292aeb51d7f52f4a90db5325d9b47bc8f5ce1538ca'
npm ERR! A complete log of this run can be found in:
npm ERR! C:\Users\AGUS\AppData\Local\npm-cache\_logs\2022-11-02T08_20_55_473Z-debug-0.log
This error indicates issues with accessing NPM cache files, which can be caused by various reasons.
Causes of the Error
Issues with NPM Cache
When the NPM cache is not updated or is unavailable, it can lead to such errors. It's possible that your system temporarily locked the cache files.
Network Issues
Network problems can also cause requests to the NPM Registry to fail.
Version Issues with Node.js and npm
An inappropriate version of Node.js or npm can cause issues with package installation.
Solutions
1. Clearing NPM Cache
The first step should be clearing the NPM cache. You can do this with the following command:
npm cache clean --force
This command will delete all NPM cache files, which may resolve the issue.
2. Deleting Temporary Files
If clearing the cache did not help, try deleting temporary files:
del /s /q %LOCALAPPDATA%\npm-cache\_cacache\*
This command will delete all files in the _cacache directory, which may help solve the problem.
3. Updating Node.js and npm
Ensure that you have the latest versions of Node.js and npm installed. You can download the latest version from the official Node.js website and reinstall npm:
npm install -g npm
4. Checking Internet Co
ection
Check the stability of your internet co
ection and try ru
ing the installation command again.
5. Using a Different Registry
If the problem persists, try using a different registry:
npm config set registry https://registry.npm.taobao.org
After installing ReactJS, you can revert the registry back:
npm config set registry https://registry.npmjs.org/
Conclusion
If none of the proposed solutions work, it might be worth checking the NPM documentation or creating a new question on StackOverflow with detailed information about your issue and log outputs.
Practical Tips
- Ensure that you have the latest versions of Node.js and npm installed.
- Check the stability of your internet co
ection.
- Regularly clear the NPM cache.
- Use commands to delete temporary files.