How to fix npm ERR! code E404 npm ERR! 404 Not Found - GET http://localhost:4873/package in npm | DevErrors

How to fix npm ERR! code E404 npm ERR! 404 Not Found - GET http://localhost:4873/package in npm | DevErrors

How to fix "npm ERR! code E404 npm ERR! 404 Not Found - GET http://localhost:4873/package"

1Verify Verdaccio is running and accessible

Confirm the Verdaccio server is active:

bash

curl http://localhost:4873/

If connection refused, start Verdaccio:

bash

verdaccio

2Configure npm to use the Verdaccio registry

Set npm to use your local Verdaccio registry:

bash

npm set registry http://localhost:4873/

Or create .npmrc file in your project:

bash

registry=http://localhost:4873/

3Check and fix uplinks configuration

Edit your Verdaccio config file (~/.config/verdaccio/config.yaml):

yaml

uplinks:
  npmjs:
    url: https://registry.npmjs.org/

packages:
  '@*/*':
    access: $authenticated
    publish: $authenticated
    proxy: npmjs
  '**':
    proxy: npmjs

The key is proxy: npmjs - this tells Verdaccio to forward requests to npmjs.org for packages it doesn't have locally.

4Clear npm cache and retry install

After configuration changes, clear npm's cache:

bash

npm cache clean --force
npm install <package-name>

5Authenticate with Verdaccio registry

If the package is private, authenticate:

bash

npm login --registry http://localhost:4873/

6Verify package was published successfully

Check if the package exists in Verdaccio storage:

bash

curl http://localhost:4873/<package-name>
ls ~/.local/share/verdaccio/storage/

If missing, publish it:

bash

npm publish --registry http://localhost:4873/