同一个服务器发布两个前端（网站）

一开始怎么设置都是505，后来把网站文件的位置换到原已经发布成功的网站位置，就成功了。考虑应该是权限问题

server {
        listen       80;
        server_name  localhost;

        # https配置参考 start
        #listen       443 ssl;

        # 证书直接存放 /docker/nginx/cert/ 目录下即可 更改证书名称即可 无需更改证书路径
        #ssl on;
        #ssl_certificate      /etc/nginx/cert/xxx.local.crt; # /etc/nginx/cert/ 为docker映射路径 不允许更改
        #ssl_certificate_key  /etc/nginx/cert/xxx.local.key; # /etc/nginx/cert/ 为docker映射路径 不允许更改
        #ssl_session_timeout 5m;
        #ssl_ciphers ECDHE-RSA-AES128-GCM-SHA256:ECDHE:ECDH:AES:HIGH:!NULL:!aNULL:!MD5:!ADH:!RC4;
        #ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
        #ssl_prefer_server_ciphers on;
        # https配置参考 end

        # 演示环境配置 拦截除 GET POST 之外的所有请求
        # if ($request_method !~* GET|POST) {
        #     rewrite  ^/(.*)$  /403;
        # }

        # location = /403 {
        #     default_type application/json;
        #     return 200 '{"msg":"演示模式，不允许操作","code":500}';
        # }

        # 限制外网访问内网 actuator 相关路径
        location ~ ^(/[^/]*)?/actuator(/.*)?$ {
            return 403;
        }

        location / {
            root   /usr/share/nginx/html;
            try_files $uri $uri/ /index.html;
            index  index.html index.htm;
        }

        location /prod-api/ {
            proxy_set_header Host $http_host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header REMOTE-HOST $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_pass http://server/;
        }

        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
    }

 server {
        listen       81;
        server_name  localhost;
        location / {
          

            root   /usr/share/nginx/html/simulate;
            index  index.html index.htm;
           # try_files  $uri $uri/ /index.html;


            add_header 'Access-Control-Allow-Origin' $http_origin;
                add_header 'Access-Control-Allow-Credentials' 'true';
                add_header 'Access-Control-Allow-Private-Network' 'true';
                add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS, DELETE, HEAD, PUT';
                add_header 'Access-Control-Allow-Headers' 'DNT,web-token,app-token,Authorization,Accept,Origin,Keep-Alive,User-Agent,X-Mx-ReqToken,X-Data-Type,X-Auth-Token,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range';
                add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range';
                if ($request_method = 'OPTIONS') {
                        add_header 'Access-Control-Max-Age' 1728000;
                        add_header 'Content-Type' 'text/plain; charset=utf-8';
                        add_header 'Content-Length' 0;
                        return 204;
                }
        }
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
    }