problem with houzez

Envato Customers Web and Code
1

its show the next error
Warning : Illegal string offset ‘default_sidebar’ in /home/customer/www/escaparatista.com.es/public_html/wp-content/themes/houzez/index.php on line 6

2

Hi

Please contact your purchased theme author, theme author will assist you.

How to contact an author to get support or for any technical query:

Thanks