Invalid command ‘Order’, perhaps misspelled or defined by a module not included in the server configuration failed

I just had the same problem while upgrading from openSUSE 13.2 to openSUSE Leap 42.1.

The problem is not a missing module in the apache2-configuration.

The problem is the upgrade from apache 2.2 to apache 2.4.
“Order” and “Allow” have to be rewritten as follows (example):

in 2.2:

Order allow,deny
Allow from all

in 2.4:

Require all granted

You can find more options an examples here:
Upgrading apache2