Hello!

After executing a great programm task in admin panel now its url shows 504 gateway timeout message. There is:
2016/01/11 13:28:14 [error] 7678#0: *1227364 upstream timed out (110: Connection timed out) while reading response header from upstream, client: 62.76.80.15, server: mysite.ru, request: "GET /administrator HTTP/1.1", upstream: "http://mysite.ru:81/administrator", host: "www.mysite.ru"
error message in errol.log for nginx
Please tell me how can I fix this error at my vps Should I increase some limits in nginx.conf? What limits if so?