frontend flutter works fine at domain. when I open console at browser I found these error.

[Error] Origin https://www.championmaung.com is not allowed by Access-Control-Allow-Origin. Status code: 404
[Error] XMLHttpRequest cannot load https://championmaung.com/api/login due to access control checks.
Failed to load resource: Origin https://www.championmaung.com is not allowed by Access-Control-Allow-Origin. Status code: 404

I am not sure the about configuration and laravel works correctly.

configuration file here

root@srv543846:/etc/nginx/sites-available# nano flutter

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

    server_name championmaung.com www.championmaung.com;

    root /var/www/html/web;
    index index.html;

    location / {
        try_files $uri $uri/ /index.html;
    }

    error_page 404 /index.html;

    location ~ /. {
        deny all;
    }


}

root@srv543846:/etc/nginx/sites-available# nano laravel

server {
    listen 80;
    server_name championmaung.com www.championmaung.com; # Replace with your domain or IP

    root /var/www/html/laravel_for_football/public;
    index index.php index.html index.htm;

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

    location ~ .php$ {
        include snippets/fastcgi-php.conf;
        fastcgi_pass unix:/var/run/php/php8.1-fpm.sock; # Ensure the PHP version matches
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        include fastcgi_params;
    }
}

-rw-rw-r– 1 root root 1217 Jun 22 15:15 default.conf
lrwxrwxrwx 1 root root 34 Jun 22 08:13 flutter -> /etc/nginx/sites-available/flutter
lrwxrwxrwx 1 root root 34 Jun 22 13:13 laravel -> /etc/nginx/sites-available/laravel

root@srv543846:/etc/nginx/sites-enabled# nano default.conf

server {
    if ($host = www.championmaung.com) {
        return 301 https://$host$request_uri;
    } # managed by Certbot


    if ($host = championmaung.com) {
        return 301 https://$host$request_uri;
    } # managed by Certbot


    listen 80;
    listen [::]:80;
    server_name championmaung.com www.championmaung.com api.championmaung.com;

    return 301 https://$host$request_uri;




}
server {
    listen 443 ssl;
    listen [::]:443 ssl;
    server_name championmaung.com www.championmaung.com;
    ssl_certificate /etc/letsencrypt/live/championmaung.com/fullchain.pem; # managed by Certbot
    ssl_certificate_key /etc/letsencrypt/live/championmaung.com/privkey.pem; # managed by Certbot

    root /var/www/html/web;
    index index.html;

    location / {
        try_files $uri $uri/ =404;
    }

    error_page 404 /index.html;

    location ~ /. {
        deny all;
 }
    location /api {
        alias /var/www/html/laravel_for_football/public;
        try_files $uri $uri/ /index.php?$query_string;

        location ~ .php$ {
            include snippets/fastcgi-php.conf;
            fastcgi_param SCRIPT_FILENAME $request_filename;
            include fastcgi_params;
        }
    }


}