With Inspect mode (F12 in Google Chrome) see missing pf1.png and pf1_white.png. Where can download this files?
I think it's left over from the demo theme because there are some more png files missing.
GET /wp-content/uploads/2017/07/pf1_HDR_white.png HTTP/1.1 GET /wp-content/uploads/2017/07/pf1_white.png HTTP/1.1 GET /wp-content/uploads/2017/07/pf1.png HTTP/1.1
These are logo images set for the sticky header variant. Please go to Appearance → Customize → Header Settings → Sticky header – Override normal settings.
You will have to edit 2 option there: 1. Logo : Image 2. Logo : Image for HIGH DPI screen and either remove an existing selection or set some image and then remove it.
Comments
I suspect that are some links photoproof logo.
Please share a link to your website, and I will check where they are referenced on your website.
With kind regards.
Here is link
https://www.robertobilic.com/
https://www.robertobilic.com/wp-content/uploads/apollo13_framework_files/css/user.css
These are logo images set for the sticky header variant. Please go to Appearance → Customize → Header Settings → Sticky header – Override normal settings.
You will have to edit 2 option there:
1. Logo : Image
2. Logo : Image for HIGH DPI screen
and either remove an existing selection or set some image and then remove it.
Save changes after you are done.
With kind regards.
If you don't plan to use stikcy version of logo, you can remove it.
These 404 errors was glitch after demo import. After reset of these setttings you are fine :-)
With kind regards.