[Vuejs]-How can i solve NPM err when i get the npm ERR! code E404

Try to run these commands:

npm config set registry http://registry.npmjs.org

npm -g install npm

npm cache clean -f

After that try to run your project with:

npm run dev

This error is just because of the package 33998 could not be found in the npm registry.

For solution you need to install bootstrap package in your application manually.

For installing BootStrap Use

npm install bootstrap

Also clean the cache of npm forcefully by

npm cache clean –force

Also check the latest npm version and update it if it was to old.

npm -v

npm install -g npm