Nginx + Let's encrypt 配置错误

我用 certbot 生成证书，在 nginx 配置中注册它们

server {
        listen 80 default_server;
        listen [::]:80 default_server;

        server_name NAME

        # SSL configuration
        #
        listen 443 ssl default_server;
        listen [::]:443 ssl default_server;

        ssl_certificate /etc/letsencrypt/live/example.com/fullchain.pem;
        ssl_certificate_key /etc/letsencrypt/live/example.com/privkey.pem;
        ssl_trusted_certificate /etc/letsencrypt/live/example.com/chain.pem;


        ssl_stapling on;
        ssl_stapling_verify on;
        resolver 127.0.0.1 8.8.8.8;

        root /home/rd/www/web;

        # Add index.php to the list if you are using PHP
        index index.html index.htm index.nginx-debian.html;

        location / {
                # First attempt to serve request as file, then
                # as directory, then fall back to displaying a 404.
                try_files $uri $uri/ =404;
        }

        location ~ \.php$ {
                include snippets/fastcgi-php.conf;
        #
        #       # With php-fpm (or other unix sockets):
                fastcgi_pass unix:/var/run/php/php7.4-fpm.sock;
        #       # With php-cgi (or other tcp sockets):
        #       fastcgi_pass 127.0.0.1:9000;
        }

        location ~ /\.ht {
                deny all;
        }

}

但是当nginx -t我收到

nginx: [emerg] BIO_new_file("/etc/letsencrypt/live/example.com/fullchain.pem") failed (SSL: error:02001002:system library:fopen:No such file or directory:fopen('/etc/letsencrypt/live/example.com/fullchain.pem','r') error:2006D080:BIO routines:BIO_new_file:no such file)
nginx: configuration file /etc/nginx/nginx.conf test failed

但是，文件（更准确地说，符号链接）是