localhost not updating all files

[LauraLeeLee]

I'm not finding much information to this issue when I google for is.

I cloned the repo as directed.
For the first about 1/3 of the course, everything works fine.

Since then, when I do work, save it , go to localhost, refresh, the changes aren't there (I can see either old code, new code not added, etc when i look at the code in sources in dev tools).

If I then go to restart localhost, then it won't load, its unreachable, etc.

I have deleted the first repo I cloned, and recloned the lesson files into a new path (in case of conflict for some reason from another directory in the old path).

It seemed to work ok for a couple of lessons.
For lesson 25, it won't recognize the changes again, I have my code (i'm pretty sure I do) as per the solution. It never passes when enter the code.
I quit localhost and went to restart it again, wouldn't load.
In the lesson 25 file, I git reset --hard to start over.
Localhost will connect, but its not recognizing any changes I make in my code editor and save.
I'm using Atom if that matters.

It seems its just the service worker file(sw/index.js) that isn't updating when a change is made within it, upon inspection in Sources in Dev Tools, those changes aren't present.
When I review IndexController.js in Sources in Dev tools, it does have changes I make and save.

The only error in console is:

Unchecked runtime.lastError: Could not establish connection. Receiving end does not exist. localhost/:1

[Deprecation] Styling master document from stylesheets defined in HTML Imports is deprecated. Please refer to https://goo.gl/EGXzpw for possible migration paths.

Any thoughts or suggestions as to if I'm doing something incorrectly or where the problem may lie?

Thank you