504 Gateway Time-out during POST

[David]

I now have this in my nginx.conf is this what you meant ? Does this log to the
same error_log ?

    log_format  main  '$remote_addr - $remote_user [$time_local] $request '
                      '"$status" $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

log_format timing '$remote_addr - $remote_user [$time_local] $request '
                  'upstream_response_time $upstream_response_time '
                  'msec $msec request_time $request_time';