Notice: Trying to get property 'post_content' of non-object

Error

Notice: Trying to get property 'post_content' of non-object in .../wp-content/themes/DT9/framework/new_class/ppt_2_layout.php on line 136

The Problem

Reference to the $thispage variable is empty in the ppt_2_layout.php file.

The Phix

Replace line #135
echo do_shortcode( $thispage->post_content );
With:
if(!empty($thispage)) { echo do_shortcode( $thispage->post_content ); }
Affected Versions: 9.3.0 & 9.3.1
Affected File: framework/new_class/ppt_2_layout.php