Fatal PHP Error

Hi,

I’ve got a error:

Fatal error: Call to a member function have_posts() on a non-object in /home/xxxxxxxxx/public_html/wp-content/plugins/yuzo-related-post/yuzo_related_post.php on line 406

On my iPad I don’t get an error but it modifies my layout.

Please help!

Regards,

Han

https://wordpress.org/plugins/yuzo-related-post/