[Resolved] get property of non-object

[Alain Aubry]

Hi
I don’t visually see any problem, but when I enable “debug” I see 3 lines with the following texts:

Notice: Trying to get property of non-object in /home/…/wp-content/plugins/wordpress-seo/frontend/class-frontend.php on line 717
Notice: Trying to get property of non-object in /home/…/wp-content/plugins/wordpress-seo/frontend/class-frontend.php on line 720
Notice: Trying to get property of non-object in /home/…/wp-content/plugins/wordpress-seo/frontend/class-breadcrumbs.php on line 399

As these lines points to wordpress-seo, I opened a ticket at: https://wordpress.org/support/topic/get-property-of-non-object/
After following their suggestions I found the fault at my “GeneratePress Child Theme”. It just happens in Author pages when the child theme is enabled, otherwise works fine.

I am bringing this here in order to find some suggestions to diagnose, how to find the faulty script. I have a big amount of functions and actions in my functions.php, many recommended here or in some other sources.

Thanks
Alain

[Tom]

Hi there,

Do you have any functions in your child theme? If so, can you share them?

[Alain Aubry]

Hi Tom
I have lots of functions…
They were tested individually before going live.
The only place where the word author is found is here (two places):

// GP Set CPT Image Positions
add_filter( 'option_generate_blog_settings', 'indigo_cpt_options' );
function indigo_cpt_options( $options ) {
		if ( is_post_type_archive( array( 'actividade', 'colaborador', 'course' ) ) OR is_tax( array( 'grupo', 'tipo' ) ) OR is_search() ) {
				$options[ 'masonry' ] = true;
				$options[ 'infinite_scroll' ] = true;
				$options[ 'post_image_padding' ] = false;
				$options[ 'post_image_position' ] = 'post-image-above-header';
				$options[ 'post_image_alignment' ] = 'post-image-aligned-center';
				$options[ 'author' ] = false;
				$options[ 'comments' ] = false;
    }
		if ( is_post_type_archive( 'evento' ) ) {
				$options[ 'masonry' ] = false;
				$options[ 'infinite_scroll' ] = true;
				$options[ 'post_image' ] = true;
				$options[ 'post_image_padding' ] = true;
				$options[ 'post_image_position' ] = 'below-title';
				$options[ 'post_image_alignment' ] = 'left';
				$options[ 'author' ] = false;
				$options[ 'comments' ] = false;
    }
		if ( is_singular( 'colaborador' ) ) {
				$options[ 'single_post_image' ] = true;
				$options[ 'single_post_image_padding' ] = true;
				$options[ 'single_post_image_position' ] = 'below-title';
				$options[ 'single_post_image_alignment' ] = 'left';
				$options[ 'author' ] = false;
				$options[ 'comments' ] = false;
    }
		return $options;
}
// End GP Set CPT Image Positions

and

// Insert Yoast WPSEO Breadcrumbs */
add_action( 'generate_before_main_content', 'indigo_breadcrumbs' );
function indigo_breadcrumbs() {
		if ( function_exists( 'yoast_breadcrumb' ) && is_single() && 'lesson' !== get_post_type() ) : // && 'lesson' !== get_post_type() && ! is_author()
				yoast_breadcrumb( '<div class="inside-article"><p id=”breadcrumbs”>', '</p></div>' );
		endif;
}
// END Insert Yoast WPSEO Breadcrumbs */

This second one ‘author’ is in a comment…

Thanks
Alain

[Alain Aubry]

I am planning disabling all the “actions” one by one, as I did with the plugins.

[Tom]

That’s a good idea – let me know if you can pinpoint the function 🙂

[Alain Aubry]

OK, I found the function that causing the problem, but it does not make any sense.
I am going the share the faulty function:

// Indigo Adjust Main Queries
add_action( 'pre_get_posts', 'indigo_adjust_queries' );
function indigo_adjust_queries( $query ) {
	if ( !is_admin() && is_post_type_archive( 'actividade' ) && $query->is_main_query() ) :
		$query->set( 'post_per_page', -1 );
		$query->set( 'orderby', 'post_modified' );
		$query->set( 'order', 'DESC' );
	endif; // actividade

	if ( !is_admin() && is_post_type_archive( 'colaborador' ) && $query->is_main_query() ) :
		$query->set( 'post_per_page', -1 );
		$query->set( 'orderby', array(
			'relation' => 'AND',
			array(
				'orderby' => 'menu_order',
				'order', 'ASC'
			),
			array(
				'orderby' => 'post_title',
				'order', 'ASC'
			)
		));
	endif; // colaborador

	if ( !is_admin() && is_post_type_archive( 'evento' ) && $query->is_main_query() ) :
    $today = date('Ymd');
		$query->set( 'post_per_page', -1 );
		$query->set( 'post_type', 'evento' );
    $query->set( 'meta_key', 'data_do_evento' );
    $query->set( 'orderby', 'meta_value_num' );
    $query->set( 'order', 'ASC' );
    $query->set( 'meta_query', array(
      array(
        'key' => 'data_do_evento',
        'compare' => '>=',
        'value' => $today,
        'type' => 'numeric'
      )
    ));
	endif; // evento

	if ( !is_admin() && is_post_type_archive( 'course' ) && $query->is_main_query() ) :
		$query->set( 'post_per_page', -1 );
		$query->set( 'orderby', 'post_modified' );
		$query->set( 'order', 'DESC' );
	endif; // course

	$term = single_term_title( '', false );
	if ( $term ) :
		if ( !is_admin() && is_tax( 'grupo' ) && $query->is_main_query() ) :
			$query->set( 'post_per_page', -1 );
			$query->set( 'post_type', 'colaborador' );
			$query->set( 'orderby', 'menu_order' );
			$query->set( 'order', 'ASC' );
			$query->set( 'tax_query', array(
				array(
					'taxonomy' => 'grupo',
					'field' => 'name',
					'operator' => 'IN',
					'terms' => $term
				)
			));
		endif; // colaborador

		if ( !is_admin() && is_tax( 'tipo' ) && $query->is_main_query() ) :
			$query->set( 'post_per_page', -1 );
			$query->set( 'post_type', 'actividade' );
			$query->set( 'orderby', 'post_modified' );
			$query->set( 'order', 'DESC' );
			$query->set( 'tax_query', array(
				array(
					'taxonomy' => 'tipo',
					'field' => 'name',
					'operator' => 'IN',
					'terms' => $term
				)
			));
		endif; // actividade
	endif; // terms

} // END indigo_adjust_queries

I will continue splitting this function into parts, maybe I can find it…

Thanks

[Alain Aubry]

Something is wrong here:
$term = single_term_title( '', false );

[Tom]

I’m not sure what would trigger that warning in Yoast SEO, unfortunately. Have you shared the problem function with them?

[Alain Aubry]

They closed my ticket as resolved previously, as the problem is located in my child theme I agreed in closing. I will share again.

It is shared here:
https://wordpress.org/support/topic/get-property-of-non-object/#post-10940723

They have an open ticket in Github:
https://github.com/Yoast/wordpress-seo/pull/10905

[Alain Aubry]

Hi Tom

You should read this:
https://wordpress.org/support/topic/get-property-of-non-object/#post-10940996

[Tom]

It seems he gave you a solution here: https://wordpress.org/support/topic/get-property-of-non-object/#post-10941663

[Alain Aubry]

Yes, the solution is working, I only tried local.
Thank you for being present and supportive…

[Tom]

Great to hear 🙂

[Author]

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