503 Service Temporarily Unavailable - on Chrome/Chromium restore

Pages with protected content get a 503 on restarting Chromium based browsers.

  • This is not the 503 related to IP addressed or whatsover - just a plain

503 Service Temporarily Unavailable

Nginx

It also often happens on first call of a site. Refresh and page appears.

content of site:

503 Service Temporarily Unavailable

503 Service Temporarily Unavailable


nginx

— Note this only happens to pages that have s2member protected content. Could be because they are not cached? Maybe I have a general problem here? This appeared with recent chrome (based) browsers. Firefox is fine.