IOException: Broken pipe

location /guanli {
    root           html;
    index          index.html index.htm;
    proxy_set_header Host $host;
    proxy_set_header X-Real-Ip $remote_addr;
    proxy_set_header X-Forwarded-For $remote_addr;
    proxy_send_timeout 1200s;
    # nginx接收upstream server数据超时, 默认60s, 如果连续的60s内没有收到1个字节, 连接关闭
    proxy_read_timeout 1200s;
    # nginx与upstream server的连接超时时间
    proxy_connect_timeout 1200s;
    # 发送数据至客户端超时, 默认60s, 如果连续的60s内客户端没有收到1个字节, 连接关闭
    send_timeout 1200s;
    proxy_pass     http://adminService;
 }