nginx configures subdomain, but cannot access it

Question

nginx configures the subdomain name, but still cannot access it. I don’t know if there is something wrong. Please help me~

server {
    listen 80;

    root /www/blog;
    index index.php index.html index.htm;
    
    server_name blog.xxx.com;
}
server {
    listen 443 ssl;

    root /www;
    index index.php index.html index.htm;

    server_name xxx.com ;

    error_page 404 = /404.html;

    
    #HTTPS

    #存放证书文件的位置
    ssl_certificate /etc/ssl/ssl.crt;
    ssl_certificate_key /etc/ssl/ssl.key;
}

#301 redirect
server {
    listen 80;
    server_name xxx.com;
    return 301 https://xxx.com$request_uri;
}

The naked domain made a welcome page and used SSL and 301 to jump to https. The root directory is /www
Then I want to set the blog domain name to a subdomain name, blog.xxx.com. The root directory of the blog is /www/blog
The configuration is as above. When you visit xxx.com/blog normally, the blog will appear, but when you visit blog.xxx.com, you will jump directly to the 114 navigation...

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The DNS hijacking has been fixed, but it is still inaccessible. Chrome displays "This webpage is not available"

Answer 1

Add location configuration

Answer 2

It seems that the situation of jumping to 114 navigation is usually caused by DNS resolution error or DNS hijacking

Answer 3

It is recommended to grab the package and see if it jumps to your server