Why are files present on site, but not in the WordPress theme or archive?

My WordPress site is now live (it is on this theme, https://themeforest.net/item/rockit-20-music-band-wordpress-theme/13384553.
I have run a URL checker, and there are files that are presenting as broken URLs that were never apart of the theme’s archive. My development team and I do not know why these files are presenting.

Here is a screenshot of a portion of the URL report: https://www.screencast.com/t/aqIqt56CMWY

Why would these files present now? How do I address them so they no longer present as broken URLs?

I can provide more information if needed.

Thanks.