Nginx返回502而不是500

Question

我使用django和nginx来提供服务。

当使用dev环境（python manage.oy runserver）并做错了什么时，它可以返回500错误。

但是当使用nginx + django并执行相同操作时，它会返回502.

如何配置nginx.conf让它返回​​500？我的配置如下：

upstream veevaqa.veevaorion.com.upstream
 {
    server 60.205.56.175:8000 weight=1;
 }
server {
    listen  80;
    server_name  veevaqa.veevaorion.com;

    location /nginxstatus{
        access_log on;
        auth_basic "nginxstatus";
        auth_basic_user_file htpasswd;
     }
    location / {
       index index.jsp;
       proxy_pass   http://veevaqa.veevaorion.com.upstream;
       proxy_redirect             off;
       proxy_set_header           Host $host;
       proxy_set_header           X-Real-IP $remote_addr;
       proxy_set_header           X-Forwarded-For $proxy_add_x_forwarded_for;
       client_max_body_size       10m;
       client_body_buffer_size    128k;
       proxy_connect_timeout      300;
       proxy_send_timeout         300;
       proxy_read_timeout         300;
       proxy_buffer_size          4k;
       proxy_buffers              4 32k;
       proxy_busy_buffers_size    64k;
       proxy_temp_file_write_size 64k;
   }

}