Service Worker registration failed with TypeError: Failed to register a ServiceWorker

The error: Service Worker registration failed with TypeError: Failed to register a ServiceWorker for scope ('http://localhost:4200/%7B%7BROOT_URL%7D%7D') with script ('http://localhost:4200/%7B%7BROOT_URL%7D%7D%7B%7BSERVICE_WORKER_FILENAME%7D%7D'): A bad HTTP response code (404) was received when fetching the script.

My application is not able to register the serviceworker and I am receiving the error that it’s not finding the sw.js file. I created a new project and installed all the dependencies for making the website a pwa, just to check if my application was the fault and i still received the error with the ember welcome page app

here is the repo

I looked at the sw-registration.js file and found this

navigator.serviceWorker.register('{{ROOT_URL}}{{SERVICE_WORKER_FILENAME}}', {

code part which might cause this error, since it doesn’t find the sw.js file