问题 I was not clear in my problem description. Let me try again. NB. This is a problem common to my production, staging, and development sites (not just to my delevlopment site as the commenters seem to have thought). NB. This problem occurs bowsing with Chrome and not with Firefox. The problem occurs at the site home page: http://www.example.com (or with "/index.php appended"). The page loads successfully, but the Console pannel of Chrome's Developer Tools shows a 404 error. The message reads