Error in Service Worker.
Uncaught (in promise) TypeError: Failed to execute 'Cache' on 'addAll': Request failed.
Main cause of this is typo in one of the filenames/ OR file is not exists that had added to cached_urls. It did not match the name of the real file so I kept getting the error.
I Got this issue due to typo in the filename and found it by quickly setting cached_urls to an empty list and found that the error went away.
