While data is refreshing, some projects appear disabled on the Projects page. One would expect that, for unanalyzed projects, the "Configure analysis" button would either take the user to a page that does work, or that the button be disabled. But the button is clickable, and will take the user to an error page:
The Configure Analysis button isn't disabled, leading users to a page that isn't available.
Disable the button correctly while the ES refresh is going on.