If it’s looking for an image that’s not there, then that means you probably added a header image a long time ago and your site is still trying to look for it and load the image. This was a Genesis Framework issue (sort of), that happens to a few people that update the framework.
Go into your WP admin and head over to your Header uploader (under Appearances > Header) and the button that says “Remove Header Image” and see if that fixes it (it should). It doesn’t happen to a lot of users, but I’ve seen 2 users have this issue of the header/logo being in the code and the site tried to look for it when it’s not supposed to be there. This has to do with people who may have had an earlier version of Genesis ( v1.0 ) and then updated to the latest version (v2.0).