Error loading png image on GitLab Page: "Failed to load resource"

Hi all - thanks for the help and hope this is the right place to ask.

I’m building a plain HTML site with GitLab Pages at The site is currently 1 page, index.html, located at /public/index.html. The page includes an image located at /public/images/screenshot.png. The image is included with this code:

For some reason, loading the page returns this error: “GET 404 (Not Found)”. If I hard refresh (ctrl+shift+r) with dev tools closed, I get a similar error: “Failed to load resource: the server responded with a status of 404 (Not Found)”.

Other SVG images on the page are working fine, and they’re located in the same folder (/public/images). What should I change? Chrome, Windows 10.