This happens when upgrading to Apache 2.4 from 2.2 or just because you don't have the right permissions set which we'll get into.
You need this in the <Directory part of your vhost or httpd.conf
<Directory "/your/vhost/path.com>
Options FollowSymLinks
AllowOverride All
Require all granted
</Directory>
server, configuration, upgrading, apache, permissions, ll, directory, vhost, httpd, conf, quot, followsymlinks, allowoverride,