why new domain always auto redirect to www?

Hi

I created a new domain.com, and I set:
Auto-Subdomain: none
redirect: none

when I test https://domain.com it always redirect to https://www.domain.com

in the domain vhost file, I see this. seems something wrong.
# nginx did not start after modifying this vhost file.
# Please check file /etc/nginx/sites-available/domain.com.vhost.err for syntax errors.

the vhost file is generated by ISPconfig
domain.com.vhost.err
server {
listen *:80;
listen [::]:80;

server_name domain.com ;

root /var/www/domain.com/web/;
disable_symlinks if_not_owner from=$document_root;


index index.html index.htm index.php index.cgi index.pl index.xhtml;



error_log /var/log/ispconfig/httpd/domain.com/error.log;
access_log /var/log/ispconfig/httpd/domain.com/access.log combined;

location ~ /\. {
deny all;
}

location ^~ /.well-known/acme-challenge/ {
access_log off;
log_not_found off;
auth_basic off;
root /usr/local/ispconfig/interface/acme/;
autoindex off;
index index.html;
try_files $uri $uri/ =404;
}

location = /favicon.ico {
log_not_found off;
access_log off;
expires max;
add_header Cache-Control "public, must-revalidate, proxy-revalidate";
}

location = /robots.txt {
allow all;
log_not_found off;
access_log off;
}

location /stats/ {

index index.html index.php;
auth_basic "Members Only";
auth_basic_user_file /var/www/clients/client0/web124/web//stats/.htpasswd_stats;
add_header Content-Security-Policy "default-src * 'self' 'unsafe-inline' 'unsafe-eval' data:;";
}

location ^~ /awstats-icon {
alias /usr/share/awstats/icon;
}

location ~ \.php$ {
try_files /4232ce5522d56b091027807a9fdc3781.htm @php;
}

location @php {
try_files $uri =404;
include /etc/nginx/fastcgi_params;
fastcgi_pass unix:/var/lib/php7.2-fpm/web124.sock;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
fastcgi_intercept_errors on;
}


}

 

thanks for reply.
I did not have any thing installed yet. it might be related to I rename domain.com to domain2.com, then create domain.com again in ISPconfig. seems something conflicted.

I fixed the issue by del the 2 related domains, and recreate it again. then it works now. seems rename a domain in ISPconfig is not as easy as I thought.