Nginx 报错：an upstream response is buffered to a temporary file

# nginx conf conf/nginx.conf
# Created by http://www.wdlinux.cn
# Last Updated 2010.06.01
user www www;
worker_processes 3;
error_log logs/error.log notice;
pid logs/nginx.pid;
worker_rlimit_nofile 5120;
events {
use epoll;
worker_connections 5120;
}

http {
include mime.types;
default_type application/octet-stream;

server_names_hash_bucket_size 512;
client_header_buffer_size 2048k;
large_client_header_buffers 8 64k;
client_max_body_size 200m;
client_body_buffer_size 30M;
limit_conn_zone $binary_remote_addr zone=one:32k;

sendfile on;
tcp_nopush on;

keepalive_timeout 60;
tcp_nodelay on;

   # 配置缓冲区大小
   proxy_buffers 16 64k;
   proxy_buffer_size 128k;
   proxy_busy_buffers_size 256k;

    # 配置fascgi进程优化

fastcgi_connect_timeout 300;
fastcgi_send_timeout 300;
fastcgi_read_timeout 300;
fastcgi_buffer_size 512k;//这几个参数调大
fastcgi_buffers 6 512k;//这几个参数调大
fastcgi_busy_buffers_size 512k;//这几个参数调大
fastcgi_temp_file_write_size 512k;//这几个参数调大
fastcgi_intercept_errors on;

gzip on;
gzip_min_length 1k;
gzip_buffers 4 16k;
gzip_http_version 1.1;
gzip_comp_level 3;
gzip_types text/plain application/javascript text/css application/xml image/png image/jpeg;
gzip_vary on;

log_format wwwlogs '$remote_addr - $remote_user [$time_local] $request $status $body_bytes_sent $http_referer $http_user_agent $http_x_forwarded_for';
#include default.conf;
include vhost/*.conf;
}