Thank you for your patience Debora.
Concerning the image, we don’t really know what happened. It seems this image was not imported during the theme setup. Anyway, I don’t think this will cause an issue.
.map should not cause any issue, unless you have your browser debugging tools activated. A quick test using Charles Web Proxy (https://www.charlesproxy.com/) shows that source maps are only loaded if developer tools are opened. If you load a page without dev tools opened, there is no http request for source maps.
For more about this, please read also the following post:
In conclusion, we really think you should not worry about this. However, we’ll take this in consideration for our next updates. 🙂