My forge nginx config gives a error

Hi all,

So ive set up a production site,

mysite.com.au

with aliases www.mysite.com.au . subdom.mysite.com.au

got the ssl.

Now im getting this error when I save the nginx config in forge

nginx: [warn] conflicting server name "www.mysite.com.au" on 0.0.0.0:443, ignored
nginx: [warn] conflicting server name "www.mysite.com.au" on [::]:443, ignored
nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful

this is my config, whats gone wrong?

# FORGE CONFIG (DO NOT REMOVE!)
include forge-conf/mysite.com.au/before/*;

server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name mysite.com.au www.mysite.com.au subdom.mysite.com.au;
    root /home/forge/mysite.com.au/public;

    # FORGE SSL (DO NOT REMOVE!)
    ssl_certificate /etc/nginx/ssl/mysite.com.au/594396/server.crt;
    ssl_certificate_key /etc/nginx/ssl/mysite.com.au/594396/server.key;

    ssl_protocols TLSv1.2;
    ssl_ciphers ECDHE-RSA-AES256-GCM-SHA512:DHE-RSA-AES256-GCM-SHA512:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-SHA384;
    ssl_prefer_server_ciphers on;
    ssl_dhparam /etc/nginx/dhparams.pem;

    add_header X-Frame-Options "SAMEORIGIN";
    add_header X-XSS-Protection "1; mode=block";
    add_header X-Content-Type-Options "nosniff";

    index index.html index.htm index.php;

    charset utf-8;

    # FORGE CONFIG (DO NOT REMOVE!)
    include forge-conf/mysite.com.au/server/*;

    location / {
        try_files $uri $uri/ /index.php?$query_string;
    }


      location = /favicon.ico { access_log off; log_not_found off; }
    location = /robots.txt  { access_log off; log_not_found off; }

    access_log off;
    error_log  /var/log/nginx/mysite.com.au-error.log error;

    error_page 404 /index.php;

    location ~ \.php$ {
        fastcgi_split_path_info ^(.+\.php)(/.+)$;
        fastcgi_pass unix:/var/run/php/php7.1-fpm.sock;
        fastcgi_index index.php;
        include fastcgi_params;
    }

    location ~ /\.(?!well-known).* {
        deny all;
    }
}

# FORGE CONFIG (DO NOT REMOVE!)
include forge-conf/mysite.com.au/after/*;