An unknown error occurred when fetching the script (Service Worker)

Question

When going offline, I get the following error by my service worker:

(unknown) #3016 An unknown error occurred when fetching the script

my service w

Answer 1

I had this issue while working in an Angular project. My problem was that I was using Angular CLI's built-in ng serve -prod command.

To make it work, I used ng build -prod and then host the resulting dist folder using http-server