nginx：emerg____和米和rGemerg未知指令“<^>上游”

我將 nginx 配置為反向代理。我的 nginx.conf 中有以下內容：

user www-data;
worker_processes auto;
pid /run/nginx.pid;
include /etc/nginx/modules-enabled/*.conf;

events {
   worker_connections 768;
}

http {

   sendfile on;
   tcp_nopush on;
   tcp_nodelay on;
   keepalive_timeout 65;
   types_hash_max_size 2048;

   server_names_hash_bucket_size 64;

   include /etc/nginx/mime.types;
   default_type application/octet-stream;

   ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
   ssl_prefer_server_ciphers on;

   access_log /var/log/nginx/access.log;
   error_log /var/log/nginx/error.log;

   gzip off;
   gzip_disable "msie6";

   include /etc/nginx/conf.d/*.conf;
   include /etc/nginx/sites-enabled/*;
}


mail {

   server {
       listen     localhost:110;
       protocol   pop3;
       proxy      on;
   }

   server {
       listen     localhost:143;
       protocol   imap;
       proxy      on;
   }
}

這在可用的站點中：

<^>upstream phoenix {
       server 127.0.0.1:4000;
}<^>

server {
       listen      80;
       server_name mywebsite.com www.mywebsite.com;
}

server {
   listen 443 ssl;
   listen [::]:443 ssl;

       server_name mywebsite.com wwww.mywebsite.com;

       add_header Strict-Transport-Security "max-age=31536000";

       ssl_certificate /etc/letsencrypt/live/mywebsite.com/fullchain.pem;
       ssl_certificate_key /etc/letsencrypt/live/mywebsite.com/privkey.pem;

       ssl_stapling on;
       ssl_stapling_verify on;

       access_log /var/log/nginx/sub.log combined;

   root /var/www/mywebsite.com/html;

   index index.html index.php index.htm;

   location / {
               allow all;

               proxy_http_version 1.1;
               proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
               proxy_set_header Host $http_host;
               proxy_set_header X-Cluster-Client-Ip $remote_addr;

               proxy_set_header Upgrade $http_upgrade;
               proxy_set_header Connection "upgrade";

               proxy_pass http://phoenix;
   }

       location ~ /\.ht {
               deny all;
       }

       location ~ /.well-known {
               allow all;
       }

   location ~ \.php$ {
       include snippets/fastcgi-php.conf;

       fastcgi_pass unix:/var/run/php/php7.0-fpm.sock;
   }
}

當我執行時，nginx -t我收到錯誤：

nginx: [emerg] unknown directive "<^>upstream" in /etc/nginx/sites-enabled/mywebsite.com:19
nginx: configuration file /etc/nginx/nginx.conf test failed

但是，啟用站點的內容包含在 http 塊中，如您在上面看到的。這裡出了什麼問題？

似乎我需要刪除 <^>。

引用自：https://serverfault.com/questions/882098