ERROR '/styles.css' not found

[DainyBernstein]

Hi all. I've been working with the CB-GH template and kept seeing this error in the console (inspecting the deployed pages):

styles.css:1 Failed to load resource: the server responded with a status of 404 ()

Everything was working, though, so I just kept going. Unrelated to that, I decided to create a branch reverting several commits because I had been playing around with things and wanted a cleaner version know that I actually understand what I'm doing. So I moved to GitHub Desktop and VS Code editor, playing around with maybe restarting using CB-CSV now, so I downloaded everything as the docs instruct and ran Jekyll, and now I'm getting a very similar error message:

ERROR '/styles.css' not found.

I went to the CB templates and tried to find a styles.css file and could not. I know css is pulled from several files, and if the error doesn't seem to be affecting anything I could continue to ignore it, but since part of why I'm doing this is to learn, I figured I'd ask!

So - what might be causing this error, and is there a way to fix it?

Bonus question: Console also shows this error:

placeholder-image.png:1 Failed to load resource: net::ERR_HTTP2_PROTOCOL_ERROR

[DainyBernstein]

Never mind, the styles.css problem was being caused by a Chrome extension. I disabled it and both problems immediately went away...