nginx反向代理配置400,404,502等状态的自定义页面问题

 proxy_intercept_errors on;

         error_page  500 502 503 504 /cmptexinfo.html;
         error_page  400 404 /cmptexinfo.html;

         location = /cmptexinfo.html{
                root /home/nginx/nginx_instance/html;
         }

server {

        listen       80;
        server_name  beijingmcmarathon.com;

        #charset koi8-r;
        #access_log  logs/host.access.log  main;

        location / {
            proxy_next_upstream error timeout http_500 http_502 http_504;
            proxy_read_timeout 60s;
            proxy_set_header   Host             $host;
            proxy_pass         http://RUN24HOURS;
            proxy_set_header   X-Real-IP        $remote_addr;
            proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;
            proxy_intercept_errors on;
            client_max_body_size 15M;
            index  index.html index.htm;
           rewrite ^/$  http://beijingmcmarathon.com/15168 break;
            }

         error_page  500 502 503 504 /cmptexinfo.html;
         error_page  400 404 /cmptexinfo.html;

         location = /cmptexinfo.html{
                root /home/nginx/nginx_instance/html;
         }


        }