Fold error class

Getting:

deprecated: Creation of dynamic property Fold\Fold::$primary_bg_mode is deprecated in /home/qkobcfli/domains/webpopulous.com/public_html/wp-content/themes/fold/includes/Fold/class-fold.php on line 891

Deprecated: Creation of dynamic property Fold\Fold::$secondary_bg_mode is deprecated in /home/qkobcfli/domains/webpopulous.com/public_html/wp-content/themes/fold/includes/Fold/class-fold.php on line 892
class="home wp-singular page-template-default page page-id-78 wp-custom-logo wp-embed-responsive wp-theme-fold wp-child-theme-fold-child light-theme">

Debug ON, of course.

Had to comment out:

add_filter( 'body_class', array( $this, 'body_classes' ) );

Fold Version: 5.7.9 using child theme.

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