I found two 404 errors that are coming from images called in from epik-theme-inline-css that can’t be found. I can email you a screen shot of the waterfall test showing the errors if you’d like. These are the details when you drill down.
Thats looks like the WordPress Background Image uploader. That can happen if you add images to the Customizer page in your Admin. It should go away if you go to your Customize page and click the Remove Image option/button on both of those sections.