Server configuration error occur when using subdirectories in Nginx

hello.

I am using Nginx and running a multilingual website using subdirectories.

The root domain and subdirectories operate separately and are not configured as multisite.

However, I put the code for Nginx in the FAQ into the server block, but I keep getting “Server configuration error”.

I tried modifying the code several times to solve this problem, but nothing worked.

Can you tell me how to solve this problem? Next is my server block.

thank you

server {
    listen       443 ssl http2;
        server_name  example.com www.example.com;
        root /var/www/vg;

        index  index.php index.html index.htm;

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


    location ^~ /en {
        try_files $uri $uri/ /en/index.php?$args;

    # BEGIN Converter for Media
    set $ext_avif ".avif";
    if ($http_accept !~* "image/avif") {
        set $ext_avif "";
    }

    set $ext_webp ".webp";
    if ($http_accept !~* "image/webp") {
        set $ext_webp "";
    }

    location ~ /wp-content/(?<path>.+)\.(?<ext>jpe?g|png|gif|webp)$ {
        add_header Vary Accept;
        expires 365d;
        try_files
            /wp-content/uploads-webpc/$path.$ext$ext_avif
            /wp-content/uploads-webpc/$path.$ext$ext_webp
            $uri =404;
    }
    # END Converter for Media

        location ~ \.php$ {
            try_files $uri =404;
            fastcgi_split_path_info ^(.+\.php)(/.+)$;
            fastcgi_pass unix:/run/php/php7.4-fpm.sock;
            fastcgi_index index.php;
            include fastcgi_params;
            #여기까지 설정은 spinupwp 설정임. 
            error_log  /var/log/nginx/example.com2.error.log;

            fastcgi_cache ashleyrich2.com;
            fastcgi_cache_valid 60m; # 200 OK 응답을 60분 동안 캐시
            fastcgi_cache_bypass $skip_cache;
            fastcgi_no_cache $skip_cache;
        }
    }


    location ~ \.php$ {
        try_files $uri =404;
        fastcgi_split_path_info ^(.+\.php)(/.+)$;
        fastcgi_pass unix:/run/php/php7.4-fpm.sock;
        fastcgi_index index.php;
        include fastcgi_params;
        #이렇게 크게 할 필요가 있나?
        fastcgi_buffers 64 16k; # default 8 4k
      # 502 에러를 없애기 위한 fastcgi 버퍼 관련 설정입니다.
          fastcgi_buffering               on;
          fastcgi_buffer_size             16k;

          # 최대 timeout 설정입니다.
          fastcgi_connect_timeout         120s;
          fastcgi_send_timeout            120s;
          fastcgi_read_timeout            120s;
        fastcgi_cache_bypass $skip_cache;
        fastcgi_no_cache $skip_cache;
        fastcgi_cache ashleyrich.com;
        fastcgi_cache_valid 60m;

    }
}