NodeJS : webpack-dev-server errors with 'command not found: webpack-dev-server'

NodeJS : webpack-dev-server errors with "command not found: webpack-dev-server"
To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

As promised, I have a secret feature that I want to reveal to you.
This is a YouTube's feature which works on Desktop.
First, Make sure this video is playing.
Next, enter the letters 'awesome' on your keyboard.
Your YouTube progress bar will transform into a flashing rainbow.

Here's a short introduction about myself,
Greetings, my name is Delphi.
I am here to aid you in getting answers to your questions.
NodeJS : webpack-dev-server errors with "command not found: webpack-dev-server"
I am available to answer your more specific queries, so feel free to comment or start a chat.
If you have an answer, or any insights to the answer, please comment below.
Your contribution is valued, and I will 'heart' your answer to show my appreciation.
NodeJS with : found: webpack-dev-server "command not webpack-dev-server" errors