yarn run webpack issues in Akeneo

Webpack is module builder in JavaScript which is used to server single file to the browser instead of multiple different files.
Webpack is also npm dependency in Akeneo. if webpack is not present then you may not modify/customize Akeneo views and UI.

Rebuild webpack bundle
Whenever js or view files are added or updated in Akeneo. then the user need to rebuild webpack files by running the command

yarn run webpack

Issue
But when webpack is not installed. User may get an error like in the image below

npm install --save-dev webpack
npm install
yarn run webpack

{
  "name": "pim-community-dev",
  "description": "Akeneo PIM Application",
  "homepage": "http://www.akeneo.com",
  "scripts": {
    "webpack": "webpack --config webpack.config.js --env=prod",
    .
    .
    .