NGINX Configuration: CORS and URL Rewrite

cors.conf

location /Folder {

    add_header 'Access-Control-Allow-Origin' '*' always;

    if ($request_method = 'OPTIONS') {
        add_header 'Access-Control-Allow-Origin' "*" always;
        add_header 'Access-Control-Allow-Credentials' 'true' always;
        add_header 'Access-Control-Allow-Headers' "Authorization, Origin, X-Requested-With, Content-Type, Accept" always;
        add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS';
        add_header 'Access-Control-Max-Age' 1728000;
        add_header 'Content-Type' 'text/plain; charset=utf-8';
        add_header 'Content-Length' 0;
        return 204;
    }

    try_files $uri $uri/ /Folder/index.php$is_args$args;
}