Favicon not appearing

If creating new HTML page and adding a favicon to it and the favicon does not appear, the browser is showing no errors (I.e. F12 key) and the server is showing no errors (SWI-Prolog top level debug messages) …

From StackOverflow answer (ref)

I’ve found that (at Chrome 56, OSX) the favicon state appears to be cached for the browser lifetime, so if a favicon isn’t being loaded, it won’t be until after restarting Chrome . It appears that it doesn’t show up in the “application” tab in dev tools and isn’t cleared by a hard reload or ‘Clear site data’.