[Closed] Trying to get property 'post_type' of non-object in class-wpml-term-actions

function terms_query( $post_id, $taxonomy ){

    $query = <<<EOT
    SELECT wp_terms.term_id,wp_terms.slug,wp_term_taxonomy.term_taxonomy_id,wp_icl_translations.language_code,wp_icl_translations.source_language_code,wp_icl_translations.trid
    FROM 
        wp_posts
    JOIN 
        wp_term_relationships
    ON
        wp_posts.ID = wp_term_relationships.object_id
    JOIN
        wp_term_taxonomy
    ON 
        wp_term_relationships.term_taxonomy_id = wp_term_taxonomy.term_taxonomy_id
    JOIN
        wp_terms 
    ON
        wp_terms.term_id = wp_term_taxonomy.term_id 
    JOIN 
        wp_icl_translations
    ON
        wp_term_taxonomy.term_taxonomy_id = wp_icl_translations.element_id
    AND
        wp_icl_translations.element_type = CONCAT( 'tax_', wp_term_taxonomy.taxonomy)
    WHERE
        wp_posts.ID = $post_id
    AND
        wp_term_taxonomy.taxonomy = '$taxonomy'
    EOT;

    global $wpdb;

    $results = $wpdb->get_results($query);

	return $results;
}

function posts_query( $post_type ){

    $query = <<<EOT
    SELECT wp_posts.ID
    FROM 
        wp_posts
    JOIN
        wp_icl_translations
    ON
        wp_posts.ID = wp_icl_translations.element_id 
    AND
        wp_icl_translations.element_type = CONCAT('post_', wp_posts.post_type)
    WHERE
        wp_posts.post_type = '$post_type'
    AND
        wp_posts.post_status = 'publish'
    AND 
        wp_icl_translations.language_code = 'fr'
    EOT;

    global $wpdb;

    $results = $wpdb->get_col($query);

	return $results;
}

function french_term( $trid ){

    $query = <<<EOT
    SELECT wp_icl_translations.element_id as term_taxonomy_id, wp_term_taxonomy.term_id as term_id
    FROM
        wp_icl_translations
    JOIN
        wp_term_taxonomy
    ON 
        wp_icl_translations.element_id = wp_term_taxonomy.term_taxonomy_id
    WHERE
        wp_icl_translations.trid = $trid
    AND
        language_code = 'fr'
    EOT;

	global $wpdb;
		
	$results = $wpdb->get_results( $query );

	return $results;
}


$events = posts_query( 'mnhn-event' );

foreach ($events as $event){
	// get the terms assigned to this event
	$age_groups = terms_query( $event, 'mnhn-age-group' );
	
	// iterate over the terms
	foreach ($age_groups as $age_group){
		// is this a French term? If so, skip
		if ( $age_group->language_code == 'fr' ){
			continue;
		}
		// get the French source of the non-French term
		$age_group_fr = french_term( $age_group->trid );
		if ( isset($age_group_fr[0]) ){
			// add the FR term
			$set = wp_set_post_terms( $event, $age_group_fr[0]->term_id, 'mnhn-age-group', true );
		}
		// remove the non-French term regardless
		$remove = wp_remove_object_terms( $event, (int) $age_group->term_id, 'mnhn-age-group' );
	}
}