upstream sent invalid status "-1 Copy failed" while reading response header from upstream

NaZz nginx-forum at
Mon Oct 27 20:44:25 UTC 2014

Where should I dig exactly? I am using Nginx with PHP-FPM and I have checked
the logs but I can't find anything. Where do I dig? I thought this is
connected to Nginx configuration?

Posted at Nginx Forum:,254279,254327#msg-254327

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