Comment # 1 on bug 909661 from Petr Gajdos

I guess you have a problem caused by apache 2.2 -> 2.4 transition*).

If possible, you should use newer 2.4 syntax, i. e.

Require all granted

instead of

Order allow,deny
Allow from all

See http://httpd.apache.org/docs/2.4/upgrading.html.

Old syntax
==========

You can use old syntax as well, apache has access_compat module (statically)
linked in -- but you can not use both old and new style at the same time. As
far as I plunge to the problematic, the problem is, that
/etc/apache2/httpd.conf contains

<Directory />
    ...
    Require all denied
</Directory>

i. e. new syntax. If you change that to old syntax access_compat module should
be active and your issue should go away, too. Nevertheless all
new-syntax-directives will not work! So I would prefer to use new syntax.

That also explains why you hadn't this problem in 13.1. /etc/apache2/httpd.conf
contained old syntax there.

Fixes that your problem?