Error while installing Article Directory Plugin!

Hi,

I am trying to install Article Directory Redux Plug-in:

https://wordpress.org/plugins/article-directory-redux/installation/

I am following the instruction guides at the link above.

However, when I do Point 7 “Add the following code in the header.php file before the </head> tag:”, I get the following error on my page “CKing Article Directory”. My website link is ckingsensors.com

Parse error: syntax error, unexpected ‘<‘ in /home3/cking/public_html/wp-content/themes/virtue_vendor_child/header.php on line 3

The original header.php file of Virtue Premium theme has only the following two lines and I just copy and past the code give in point 7 of the plugin installation guide.

Here is the content of my header.php before copying and pasting the code in point 7.
<?php
/* empty */

In Point 7, it is mentioned “BEFORE the </head> tag but I don’t see any such tag in the original header.php file of Virtue Premium.

Any help would greatly be appreciated.

Thanks.