Nginx recv () error (104: Reset connection on a peer-to-peer network) error while reading the response header from the upstream

Question

I am using a dedicated server with webuzo as a panel. from the first installation I have two problems with an error with my nginx server. I have an error:

(1) 2015/11/01 18:41:45 [error] 6806 # 0: * 68294 recv () failed (104: Connection reset by peer) while reading the response header up, client: 192.187. 100.154, server: domain.com, request: "GET / ebook / q / pdf / Women-Pioneers-of-Public-Education-How-Culture-Cam-.html HTTP / 1.1", upstream: "fastcgi: / /127.0.0.1: 9001 ", host:" domain.com ", referrer:" http://domain.com/ "

(2) 2015/11/01 18:38:48 [error] 6806 # 0: * 67648 upstream timed out (110: connection timeout) when connecting to the upstream client: 87.213.232.155, server: domain. com, request: "GET / ebook / q / pdf / Prentice-Hall-Chemistry-Assessment-Answers-Chapter-18.html HTTP / 1.0", upstream: "fastcgi: //127.0.0.1: 9001", host: " domain.com ", referrer:" http://domain.com "

please tell me what to do with this error? because it makes my download server too slow and sends me a nightmare every day ..... please help me guys.

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