Error message only displays when there is truly an error that blocks the user going forward Error message includes clear description of what the error is/ what input is causing the error Error message includes recommended user actions to fix the incorrect input
Clear indication of when a page is still loading (a function is still processing - e.g. listing courses, completing a search, etc.) so the user knows not to navigate away from the page and that it is not an error.
- Visual indication of page loading (and ideally, a progress bar)
