httpd fail to serve page with default httpd.conf; it shows: 403 Forbidden.

[latincom]

Hello misc list:

I have had a Web Server at home for 20 years, and this time, i am not 
able to discover the error! I am Agronomist, then my knowledge is in 
other field.

I rented a server at vultr, with clean installation, because i lost my 
Laptop and back ups.

I created rc.conf.local and added httpd_flags="" and without any change 
i did a reboot.

After that, acme-client -v my_domain, then did the test with default 
httpd.conf! it worked for 1 second and 403 Forbidden message appeared! 
httpd -n says OK, permissions seem ok to me, i have not touche them.

Your help and OS are very much appreciated

The new httpd.conf using my_domain:

# $OpenBSD: httpd.conf,v 1.20 2018/06/13 15:08:24 reyk Exp $

server "my_domain" {
        listen on * port 80
        location "/.well-known/acme-challenge/*" {
                root "/acme"
                request strip 2
        }
        location * {
                block return 302 "https://$HTTP_HOST$REQUEST_URI";
        }
}

server "my_domain" {
        listen on * tls port 443
        tls {
                certificate "/etc/ssl/fullchain.pem"
                key "/etc/ssl/private/key"
        }
        location "/pub/*" {
                directory auto index
        }
        location "/.well-known/acme-challenge/*" {
                root "/acme"
                request strip 2
        }
}