npm install failed, npm ERR! invalid json response

Question

npm WARN ERESOLVE overriding peer dependency
npm WARN Found: [email protected]
npm WARN node_modules/@ivan/data-insights/node_modules/bootstrap
npm WARN bootstrap@"^3.3.7" from @ivan/[email protected]
npm WARN node_modules/@ivan/data-insights
npm WARN @ivan/data-insights@"1.7.26" from the root project
npm WARN
npm WARN Could not resolve dependency:
npm WARN peer bootstrap@"^4.3.1" from [email protected]
npm WARN node_modules/@ivan/data-insights/node_modules/bootstrap-switch
npm WARN bootstrap-switch@"^3.4.0" from @ivan/[email protected]
npm WARN node_modules/@ivan/data-insights
npm ERR! code FETCH_ERROR
npm ERR! errno FETCH_ERROR
npm ERR! invalid json response body at http://registry.npmjs.org/@babel%2fparser reason: Unexpected token d in JSON at position 103148

Answer 1

The Error's saying there exists already a version of bootstrap in your project. Try to remove bootstrap and install again. OR Remove the node_modules and run npm install again to install your packages.

Answer 2

I have already resolved this issue in the following way:

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'