Cannot get httpd block directives to work

[T K]

Hi there,

I am trying to block direct access to given subfolder of
simple php website hosted on OpenBSD 6.8 amd64.
Inside webroot folder there are some subfolders
containing html files I'd like to restrict for direct requests,
as they are intended for including to php scripts, not
direct viewing.

What I want to achieve is to get 403 error while
requesting "http://10.0.1.222/FOLDER/file.html";.
This is say "development" server, accessible
through local lan, listening on IP given below.

My very simple config looks like this:

server "10.0.1.222" {
        listen on 10.0.1.222 port 80
        log style combined

         location "/*php*"{
                root "/FOLDER"
                fastcgi socket "/run/php-fpm.sock"
        }

        directory {
                index "index.php"
        }

        location "/*" {
                root "/FOLDER"
        }

        location "/SUBFOLDER/*" {block}
}

Above does not work as I'd expect.
Requesting "/SUBFOLDER" itself returns
403 code but hitting proper html filename
gets suceeded  with 200 code.
I tried many versions of shell globes
for "/SUBFOLDER/file" path but nothing changes
described behaviour. I do not know if tere is
problem in globe itself or in server config.
No idea what to do, so  any help appreciated.

Tomasz(equi)Krol