markup issue

[mohammadHM-AF]

greeting justin,
search console representing a new issue. i have had 'missing field ITEM' with your updated code but facing with new one 'invalid URL in field 'id''
here is a discription. " the last position in breadcrumb line have a duplicate issue in name and id that both shows the name value whilst the id should have represent the URL. hope to recieve an update

[fajo]

Hi, I have the same problem: Invalid URL in field 'id'. The last position in breadcrumb is:
<li itemprop="itemListElement" itemscope itemtype="http://schema.org/ListItem" class="trail-item trail-end"><span itemprop="item"><span itemprop="name">POST NAME</span></span><meta itemprop="position" content="3" /></li>
, but google expects :
<li itemprop="itemListElement" itemscope itemtype="http://schema.org/ListItem" class="trail-item trail-end"><a href="URL" itemprop="item"><span itemprop="name">POST NAME</span></a><meta itemprop="position" content="3" /></li>?
Thanks for the help.

[kiarashi]

Same issue on my end as well.

Solution to the invalid URL in field 'id
is to remove schema.org markup for any unlinked breadcrumb (page)titles.

[mohammadHM-AF]

we all are waiting for a response. help us please no one know what to do. no refrence

[redactuk]

Any news on this? Note: If project is dead please just say so we can find alternative.

[mohammadHM-AF]

@redactuk i don't think of any update for this. i deleted the REAUIRED code for BREADCRUMB_TRAIL_MASTER plugin by @justintadlock and started to use schema.org plugin in wordpress. pro version is available too and it didn't conflict any other codes in my theme. search console errors started to dissapera (not yet finished)

[redactuk]

@mohammadHM-AF Thanks. Looking at other forks I've decided best solution is adding parameter to disable all shema markup (as done by @premanshup) and letting my SEO plugin handle breadcrumb schema in the preferred JSON format. Ideally, a future version of this code would do this i.e. simply handle the html for trail and create separate JSON markup.

[kiarashi]

Here's a solution I've been using (adjusted to my own needs). :)

// Add the number of items and item list order schema.
// MODIFIED
if ( true === $this->args['show_title'] ) {
	$breadcrumb .= sprintf( '<meta name="numberOfItems" content="%d" />', absint( $item_count-1 ) );
} else {
	$breadcrumb .= sprintf( '<meta name="numberOfItems" content="%d" />', absint( $item_count ) );
}

// Loop through the items and add them to the list.
foreach ( $this->items as $item ) {
				
// MODIFIED
$orginal_title = $item;

// Build the list item.
// MODIFIED
if ( true === $this->args['show_title'] && $item_count === $item_position ) {
	$breadcrumb .= sprintf( '<%1$s class="' . $item_class . '">%2$s</%1$s>', tag_escape( $this->args['item_tag'] ), $orginal_title );
} else {
	$breadcrumb .= sprintf( '<%1$s %2$s>%3$s%4$s</%1$s>', tag_escape( $this->args['item_tag'] ),$attributes, $item, $meta );
}

This change only removes the schema when show_title is set to true.

[mohammadHM-AF]

@kiarashi @redactuk @fajo thanks for your support and hope @justintadlock make the required modification to the source code of the plugin.

[Yoneo]

Here's a solution I've been using (adjusted to my own needs). :)

// Add the number of items and item list order schema.
// MODIFIED
if ( true === $this->args['show_title'] ) {
	$breadcrumb .= sprintf( '<meta name="numberOfItems" content="%d" />', absint( $item_count-1 ) );
} else {
	$breadcrumb .= sprintf( '<meta name="numberOfItems" content="%d" />', absint( $item_count ) );
}

// Loop through the items and add them to the list.
foreach ( $this->items as $item ) {
				
// MODIFIED
$orginal_title = $item;

// Build the list item.
// MODIFIED
if ( true === $this->args['show_title'] && $item_count === $item_position ) {
	$breadcrumb .= sprintf( '<%1$s class="' . $item_class . '">%2$s</%1$s>', tag_escape( $this->args['item_tag'] ), $orginal_title );
} else {
	$breadcrumb .= sprintf( '<%1$s %2$s>%3$s%4$s</%1$s>', tag_escape( $this->args['item_tag'] ),$attributes, $item, $meta );
}

This change only removes the schema when show_title is set to true.

I have had pasted it, but I don´t know if it was made right.

Here my code, maybe I have done it in the wrong way (I am still a beginner). Can you please check?

<?php
/**
 * Breadcrumb Trail - A breadcrumb menu script for WordPress.
 *
 * Breadcrumb Trail is a script for showing a breadcrumb trail for any type of page.  It tries to
 * anticipate any type of structure and display the best possible trail that matches your site's
 * permalink structure.  While not perfect, it attempts to fill in the gaps left by many other
 * breadcrumb scripts.
 *
 * This program is free software; you can redistribute it and/or modify it under the terms of the GNU
 * General Public License as published by the Free Software Foundation; either version 2 of the License,
 * or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
 * even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *
 * @package   BreadcrumbTrail
 * @version   1.1.0
 * @author    Justin Tadlock <[email protected]>
 * @copyright Copyright (c) 2008 - 2017, Justin Tadlock
 * @link      https://themehybrid.com/plugins/breadcrumb-trail
 * @license   http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 */
/**
 * Shows a breadcrumb for all types of pages.  This is a wrapper function for the Breadcrumb_Trail class,
 * which should be used in theme templates.
 *
 * @since  0.1.0
 * @access public
 * @param  array $args Arguments to pass to Breadcrumb_Trail.
 * @return void
 */
function breadcrumb_trail( $args = array() ) {
    $breadcrumb = apply_filters( 'breadcrumb_trail_object', null, $args );
    if ( ! is_object( $breadcrumb ) )
        $breadcrumb = new Breadcrumb_Trail( $args );
    return $breadcrumb->trail();
}
/**
 * Creates a breadcrumbs menu for the site based on the current page that's being viewed by the user.
 *
 * @since  0.6.0
 * @access public
 */
class Breadcrumb_Trail {
    /**
     * Array of items belonging to the current breadcrumb trail.
     *
     * @since  0.1.0
     * @access public
     * @var    array
     */
    public $items = array();
    /**
     * Arguments used to build the breadcrumb trail.
     *
     * @since  0.1.0
     * @access public
     * @var    array
     */
    public $args = array();
    /**
     * Array of text labels.
     *
     * @since  1.0.0
     * @access public
     * @var    array
     */
    public $labels = array();
    /**
     * Array of post types (key) and taxonomies (value) to use for single post views.
     *
     * @since  1.0.0
     * @access public
     * @var    array
     */
    public $post_taxonomy = array();
    /* ====== Magic Methods ====== */
    /**
     * Magic method to use in case someone tries to output the layout object as a string.
     * We'll just return the trail HTML.
     *
     * @since  1.0.0
     * @access public
     * @return string
     */
    public function __toString() {
        return $this->trail();
    }
    /**
     * Sets up the breadcrumb trail properties.  Calls the `Breadcrumb_Trail::add_items()` method
     * to creat the array of breadcrumb items.
     *
     * @since  0.6.0
     * @access public
     * @param  array   $args  {
     *     @type string    $container      Container HTML element. nav|div
     *     @type string    $before         String to output before breadcrumb menu.
     *     @type string    $after          String to output after breadcrumb menu.
     *     @type string    $browse_tag     The HTML tag to use to wrap the "Browse" header text.
     *     @type string    $list_tag       The HTML tag to use for the list wrapper.
     *     @type string    $item_tag       The HTML tag to use for the item wrapper.
     *     @type bool      $show_on_front  Whether to show when `is_front_page()`.
     *     @type bool      $network        Whether to link to the network main site (multisite only).
     *     @type bool      $show_title     Whether to show the title (last item) in the trail.
     *     @type bool      $show_browse    Whether to show the breadcrumb menu header.
     *     @type array     $labels         Text labels. @see Breadcrumb_Trail::set_labels()
     *     @type array     $post_taxonomy  Taxonomies to use for post types. @see Breadcrumb_Trail::set_post_taxonomy()
     *     @type bool      $echo           Whether to print or return the breadcrumbs.
     * }
     * @return void
     */
    public function __construct( $args = array() ) {
        $defaults = array(
            'container'       => 'nav',
            'before'          => '',
            'after'           => '',
            'browse_tag'      => 'h2',
            'list_tag'        => 'ul',
            'item_tag'        => 'li',
            'show_on_front'   => true,
            'network'         => false,
            'show_title'      => true,
            'show_browse'     => true,
            'labels'          => array(),
            'post_taxonomy'   => array(),
            'echo'            => true
        );
        // Parse the arguments with the deaults.
        $this->args = apply_filters( 'breadcrumb_trail_args', wp_parse_args( $args, $defaults ) );
        // Set the labels and post taxonomy properties.
        $this->set_labels();
        $this->set_post_taxonomy();
        // Let's find some items to add to the trail!
        $this->add_items();
    }
    /* ====== Public Methods ====== */
    /**
     * Formats the HTML output for the breadcrumb trail.
     *
     * @since  0.6.0
     * @access public
     * @return string
     */
    public function trail() {
        // Set up variables that we'll need.
        $breadcrumb    = '';
        $item_count    = count( $this->items );
        $item_position = 0;
        // Connect the breadcrumb trail if there are items in the trail.
        if ( 0 < $item_count ) {
            // Add 'browse' label if it should be shown.
            if ( true === $this->args['show_browse'] ) {
                $breadcrumb .= sprintf(
                    '<%1$s class="trail-browse">%2$s</%1$s>',
                    tag_escape( $this->args['browse_tag'] ),
                    $this->labels['browse']
                );
            }
            // Open the unordered list.
            $breadcrumb .= sprintf(
                '<%s class="trail-items" itemscope itemtype="http://schema.org/BreadcrumbList">',
                tag_escape( $this->args['list_tag'] )
            );
            // Add the number of items and item list order schema.
			// Add the number of items and item list order schema.
// MODIFIED
if ( true === $this->args['show_title'] ) {
	$breadcrumb .= sprintf( '<meta name="numberOfItems" content="%d" />', absint( $item_count-1 ) );
} else {
	$breadcrumb .= sprintf( '<meta name="numberOfItems" content="%d" />', absint( $item_count ) );
}
            //$breadcrumb .= sprintf( '<meta name="numberOfItems" content="%d" />', absint( $item_count ) );
            //$breadcrumb .= '<meta name="itemListOrder" content="Ascending" />';
            // Loop through the items and add them to the list.
            foreach ( $this->items as $item ) {
				$orginal_title = $item;
                // Iterate the item position.
                ++$item_position;
                // Check if the item is linked.
                preg_match( '/(<a.*?>)(.*?)(<\/a>)/i', $item, $matches );
                // Wrap the item text with appropriate itemprop.
                $item = ! empty( $matches ) ? sprintf( '%s<span itemprop="name">%s</span>%s', $matches[1], $matches[2], $matches[3] ) : sprintf( '<span itemprop="name">%s</span>', $item );
                // Wrap the item with its itemprop.
                $item = ! empty( $matches )
                    ? preg_replace( '/(<a.*?)([\'"])>/i', '$1$2 itemprop=$2item$2>', $item )
                    : sprintf( '<span itemprop="item">%s</span>', $item );
                // Add list item classes.
                $item_class = 'trail-item';
                if ( 1 === $item_position && 1 < $item_count )
                    $item_class .= ' trail-begin';
                elseif ( $item_count === $item_position )
                    $item_class .= ' trail-end';
                // Create list item attributes.
                $attributes = 'itemprop="itemListElement" itemscope itemtype="http://schema.org/ListItem" class="' . $item_class . '"';
                // Build the meta position HTML.
                $meta = sprintf( '<meta itemprop="position" content="%s" />', absint( $item_position ) );
                // Build the list item.
				// MODIFIED
if ( true === $this->args['show_title'] && $item_count === $item_position ) {
	$breadcrumb .= sprintf( '<%1$s class="' . $item_class . '">%2$s</%1$s>', tag_escape( $this->args['item_tag'] ), $orginal_title );
} else {
	$breadcrumb .= sprintf( '<%1$s %2$s>%3$s%4$s</%1$s>', tag_escape( $this->args['item_tag'] ),$attributes, $item, $meta );
}
                //$breadcrumb .= sprintf( '<%1$s %2$s>%3$s%4$s</%1$s>', tag_escape( $this->args['item_tag'] ),$attributes, $item, $meta );
            }
            // Close the unordered list.
            $breadcrumb .= sprintf( '</%s>', tag_escape( $this->args['list_tag'] ) );
            // Wrap the breadcrumb trail.
            $breadcrumb = sprintf(
                '<%1$s role="navigation" aria-label="%2$s" class="breadcrumb-trail breadcrumbs" >%3$s%4$s%5$s</%1$s>',
                tag_escape( $this->args['container'] ),
                esc_attr( $this->labels['aria_label'] ),
                $this->args['before'],
                $breadcrumb,
                $this->args['after']
            );
        }
        // Allow developers to filter the breadcrumb trail HTML.
        $breadcrumb = apply_filters( 'breadcrumb_trail', $breadcrumb, $this->args );
        if ( false === $this->args['echo'] )
            return $breadcrumb;
        echo Eveland_Helper::escaped_html($breadcrumb);
    }
    /* ====== Protected Methods ====== */
    /**
     * Sets the labels property.  Parses the inputted labels array with the defaults.
     *
     * @since  1.0.0
     * @access protected
     * @return void
     */
    protected function set_labels() {
        $defaults = array(
            'browse'              => esc_html__( 'Browse:',                               'eveland' ),
            'aria_label'          => esc_attr_x( 'Breadcrumbs', 'breadcrumbs aria label', 'eveland' ),
            'home'                => esc_html__( 'Home',                                  'eveland' ),
            'error_404'           => esc_html__( '404 Not Found',                         'eveland' ),
            'archives'            => esc_html__( 'Archives',                              'eveland' ),
            // Translators: %s is the search query.
            'search'              => esc_html__( 'Search results for: %s',                'eveland' ),
            // Translators: %s is the page number.
            'paged'               => esc_html__( 'Page %s',                               'eveland' ),
            // Translators: %s is the page number.
            'paged_comments'      => esc_html__( 'Comment Page %s',                       'eveland' ),
            // Translators: Minute archive title. %s is the minute time format.
            'archive_minute'      => esc_html__( 'Minute %s',                             'eveland' ),
            // Translators: Weekly archive title. %s is the week date format.
            'archive_week'        => esc_html__( 'Week %s',                               'eveland' ),
            // "%s" is replaced with the translated date/time format.
            'archive_minute_hour' => '%s',
            'archive_hour'        => '%s',
            'archive_day'         => '%s',
            'archive_month'       => '%s',
            'archive_year'        => '%s',
        );
        $this->labels = apply_filters( 'breadcrumb_trail_labels', wp_parse_args( $this->args['labels'], $defaults ) );
    }
    /**
     * Sets the `$post_taxonomy` property.  This is an array of post types (key) and taxonomies (value).
     * The taxonomy's terms are shown on the singular post view if set.
     *
     * @since  1.0.0
     * @access protected
     * @return void
     */
    protected function set_post_taxonomy() {
        $defaults = array();
        // If post permalink is set to `%postname%`, use the `category` taxonomy.
        if ( '%postname%' === trim( get_option( 'permalink_structure' ), '/' ) )
            $defaults['post'] = 'category';
        $this->post_taxonomy = apply_filters( 'breadcrumb_trail_post_taxonomy', wp_parse_args( $this->args['post_taxonomy'], $defaults ) );
    }
    /**
     * Runs through the various WordPress conditional tags to check the current page being viewed.  Once
     * a condition is met, a specific method is launched to add items to the `$items` array.
     *
     * @since  1.0.0
     * @access protected
     * @return void
     */
    protected function add_items() {
        // If viewing the front page.
        if ( is_front_page() ) {
            $this->add_front_page_items();
        }
        // If not viewing the front page.
        else {
            // Add the network and site home links.
            $this->add_network_home_link();
            $this->add_site_home_link();
            // If viewing the home/blog page.
            if ( is_home() ) {
                $this->add_blog_items();
            }
            // If viewing a single post.
            elseif ( is_singular() ) {
                $this->add_singular_items();
            }
            // If viewing an archive page.
            elseif ( is_archive() ) {
                if ( is_post_type_archive() )
                    $this->add_post_type_archive_items();
                elseif ( is_category() || is_tag() || is_tax() )
                    $this->add_term_archive_items();
                elseif ( is_author() )
                    $this->add_user_archive_items();
                elseif ( get_query_var( 'minute' ) && get_query_var( 'hour' ) )
                    $this->add_minute_hour_archive_items();
                elseif ( get_query_var( 'minute' ) )
                    $this->add_minute_archive_items();
                elseif ( get_query_var( 'hour' ) )
                    $this->add_hour_archive_items();
                elseif ( is_day() )
                    $this->add_day_archive_items();
                elseif ( get_query_var( 'w' ) )
                    $this->add_week_archive_items();
                elseif ( is_month() )
                    $this->add_month_archive_items();
                elseif ( is_year() )
                    $this->add_year_archive_items();
                else
                    $this->add_default_archive_items();
            }
            // If viewing a search results page.
            elseif ( is_search() ) {
                $this->add_search_items();
            }
            // If viewing the 404 page.
            elseif ( is_404() ) {
                $this->add_404_items();
            }
        }
        // Add paged items if they exist.
        $this->add_paged_items();
        // Allow developers to overwrite the items for the breadcrumb trail.
        $this->items = array_unique( apply_filters( 'breadcrumb_trail_items', $this->items, $this->args ) );
    }
    /**
     * Gets front items based on $wp_rewrite->front.
     *
     * @since  1.0.0
     * @access protected
     * @return void
     */
    protected function add_rewrite_front_items() {
        global $wp_rewrite;
        if ( $wp_rewrite->front )
            $this->add_path_parents( $wp_rewrite->front );
    }
    /**
     * Adds the page/paged number to the items array.
     *
     * @since  1.0.0
     * @access protected
     * @return void
     */
    protected function add_paged_items() {
        // If viewing a paged singular post.
        if ( is_singular() && 1 < get_query_var( 'page' ) && true === $this->args['show_title'] )
            $this->items[] = sprintf( $this->labels['paged'], number_format_i18n( absint( get_query_var( 'page' ) ) ) );
        // If viewing a singular post with paged comments.
        elseif ( is_singular() && get_option( 'page_comments' ) && 1 < get_query_var( 'cpage' ) )
            $this->items[] = sprintf( $this->labels['paged_comments'], number_format_i18n( absint( get_query_var( 'cpage' ) ) ) );
        // If viewing a paged archive-type page.
        elseif ( is_paged() && true === $this->args['show_title'] )
            $this->items[] = sprintf( $this->labels['paged'], number_format_i18n( absint( get_query_var( 'paged' ) ) ) );
    }
    /**
     * Adds the network (all sites) home page link to the items array.
     *
     * @since  1.0.0
     * @access protected
     * @return void
     */
    protected function add_network_home_link() {
        if ( is_multisite() && ! is_main_site() && true === $this->args['network'] )
            $this->items[] = sprintf( '<a href="%s" rel="home">%s</a>', esc_url( network_home_url() ), $this->labels['home'] );
    }
    /**
     * Adds the current site's home page link to the items array.
     *
     * @since  1.0.0
     * @access protected
     * @return void
     */
    protected function add_site_home_link() {
        $network = is_multisite() && ! is_main_site() && true === $this->args['network'];
        $label   = $network ? get_bloginfo( 'name' ) : $this->labels['home'];
        $rel     = $network ? '' : ' rel="home"';
        $this->items[] = sprintf( '<a href="%s"%s>%s</a>', esc_url( user_trailingslashit( home_url('/') ) ), $rel, $label );
    }
    /**
     * Adds items for the front page to the items array.
     *
     * @since  1.0.0
     * @access protected
     * @return void
     */
    protected function add_front_page_items() {
        // Only show front items if the 'show_on_front' argument is set to 'true'.
        if ( true === $this->args['show_on_front'] || is_paged() || ( is_singular() && 1 < get_query_var( 'page' ) ) ) {
            // Add network home link.
            $this->add_network_home_link();
            // If on a paged view, add the site home link.
            if ( is_paged() )
                $this->add_site_home_link();
            // If on the main front page, add the network home title.
            elseif ( true === $this->args['show_title'] )
                $this->items[] = is_multisite() && true === $this->args['network'] ? get_bloginfo( 'name' ) : $this->labels['home'];
        }
    }
    /**
     * Adds items for the posts page (i.e., is_home()) to the items array.
     *
     * @since  1.0.0
     * @access protected
     * @return void
     */
    protected function add_blog_items() {
        // Get the post ID and post.
        $post_id = get_queried_object_id();
        $post    = get_post( $post_id );
        // If the post has parents, add them to the trail.
        if ( 0 < $post->post_parent )
            $this->add_post_parents( $post->post_parent );
        // Get the page title.
        $title = get_the_title( $post_id );
        // Add the posts page item.
        if ( is_paged() )
            $this->items[] = sprintf( '<a href="%s">%s</a>', esc_url( get_permalink( $post_id ) ), $title );
        elseif ( $title && true === $this->args['show_title'] )
            $this->items[] = $title;
    }
    /**
     * Adds singular post items to the items array.
     *
     * @since  1.0.0
     * @access protected
     * @return void
     */
    protected function add_singular_items() {
        // Get the queried post.
        $post    = get_queried_object();
        $post_id = get_queried_object_id();
        // If the post has a parent, follow the parent trail.
        if ( 0 < $post->post_parent )
            $this->add_post_parents( $post->post_parent );
        // If the post doesn't have a parent, get its hierarchy based off the post type.
        else
            $this->add_post_hierarchy( $post_id );
        // Display terms for specific post type taxonomy if requested.
        if ( ! empty( $this->post_taxonomy[ $post->post_type ] ) )
            $this->add_post_terms( $post_id, $this->post_taxonomy[ $post->post_type ] );
        // End with the post title.
        if ( $post_title = single_post_title( '', false ) ) {
            if ( ( 1 < get_query_var( 'page' ) || is_paged() ) || ( get_option( 'page_comments' ) && 1 < absint( get_query_var( 'cpage' ) ) ) )
                $this->items[] = sprintf( '<a href="%s">%s</a>', esc_url( get_permalink( $post_id ) ), $post_title );
            elseif ( true === $this->args['show_title'] )
                $this->items[] = $post_title;
        }
    }
    /**
     * Adds the items to the trail items array for taxonomy term archives.
     *
     * @since  1.0.0
     * @access protected
     * @global object $wp_rewrite
     * @return void
     */
    protected function add_term_archive_items() {
        global $wp_rewrite;
        // Get some taxonomy and term variables.
        $term           = get_queried_object();
        $taxonomy       = get_taxonomy( $term->taxonomy );
        $done_post_type = false;
        // If there are rewrite rules for the taxonomy.
        if ( false !== $taxonomy->rewrite ) {
            // If 'with_front' is true, dd $wp_rewrite->front to the trail.
            if ( $taxonomy->rewrite['with_front'] && $wp_rewrite->front )
                $this->add_rewrite_front_items();
            // Get parent pages by path if they exist.
            $this->add_path_parents( $taxonomy->rewrite['slug'] );
            // Add post type archive if its 'has_archive' matches the taxonomy rewrite 'slug'.
            if ( $taxonomy->rewrite['slug'] ) {
                $slug = trim( $taxonomy->rewrite['slug'], '/' );
                // Deals with the situation if the slug has a '/' between multiple
                // strings. For example, "movies/genres" where "movies" is the post
                // type archive.
                $matches = explode( '/', $slug );
                // If matches are found for the path.
                if ( isset( $matches ) ) {
                    // Reverse the array of matches to search for posts in the proper order.
                    $matches = array_reverse( $matches );
                    // Loop through each of the path matches.
                    foreach ( $matches as $match ) {
                        // If a match is found.
                        $slug = $match;
                        // Get public post types that match the rewrite slug.
                        $post_types = $this->get_post_types_by_slug( $match );
                        if ( ! empty( $post_types ) ) {
                            $post_type_object = $post_types[0];
                            // Add support for a non-standard label of 'archive_title' (special use case).
                            $label = ! empty( $post_type_object->labels->archive_title ) ? $post_type_object->labels->archive_title : $post_type_object->labels->name;
                            // Core filter hook.
                            $label = apply_filters( 'post_type_archive_title', $label, $post_type_object->name );
                            // Add the post type archive link to the trail.
                            $this->items[] = sprintf( '<a href="%s">%s</a>', esc_url( get_post_type_archive_link( $post_type_object->name ) ), $label );
                            $done_post_type = true;
                            // Break out of the loop.
                            break;
                        }
                    }
                }
            }
        }
        // If there's a single post type for the taxonomy, use it.
        if ( false === $done_post_type && 1 === count( $taxonomy->object_type ) && post_type_exists( $taxonomy->object_type[0] ) ) {
            // If the post type is 'post'.
            if ( 'post' === $taxonomy->object_type[0] ) {
                $post_id = get_option( 'page_for_posts' );
                if ( 'posts' !== get_option( 'show_on_front' ) && 0 < $post_id )
                    $this->items[] = sprintf( '<a href="%s">%s</a>', esc_url( get_permalink( $post_id ) ), get_the_title( $post_id ) );
                // If the post type is not 'post'.
            } else {
                $post_type_object = get_post_type_object( $taxonomy->object_type[0] );
                $label = ! empty( $post_type_object->labels->archive_title ) ? $post_type_object->labels->archive_title : $post_type_object->labels->name;
                // Core filter hook.
                $label = apply_filters( 'post_type_archive_title', $label, $post_type_object->name );
                $this->items[] = sprintf( '<a href="%s">%s</a>', esc_url( get_post_type_archive_link( $post_type_object->name ) ), $label );
            }
        }
        // If the taxonomy is hierarchical, list its parent terms.
        if ( is_taxonomy_hierarchical( $term->taxonomy ) && $term->parent )
            $this->add_term_parents( $term->parent, $term->taxonomy );
        // Add the term name to the trail end.
        if ( is_paged() )
            $this->items[] = sprintf( '<a href="%s">%s</a>', esc_url( get_term_link( $term, $term->taxonomy ) ), single_term_title( '', false ) );
        elseif ( true === $this->args['show_title'] )
            $this->items[] = single_term_title( '', false );
    }
    /**
     * Adds the items to the trail items array for post type archives.
     *
     * @since  1.0.0
     * @access protected
     * @return void
     */
    protected function add_post_type_archive_items() {
        // Get the post type object.
        $post_type_object = get_post_type_object( get_query_var( 'post_type' ) );
        if ( false !== $post_type_object->rewrite ) {
            // If 'with_front' is true, add $wp_rewrite->front to the trail.
            if ( $post_type_object->rewrite['with_front'] )
                $this->add_rewrite_front_items();
            // If there's a rewrite slug, check for parents.
            if ( ! empty( $post_type_object->rewrite['slug'] ) )
                $this->add_path_parents( $post_type_object->rewrite['slug'] );
        }
        // Add the post type [plural] name to the trail end.
        if ( is_paged() || is_author() )
            $this->items[] = sprintf( '<a href="%s">%s</a>', esc_url( get_post_type_archive_link( $post_type_object->name ) ), post_type_archive_title( '', false ) );
        elseif ( true === $this->args['show_title'] )
            $this->items[] = post_type_archive_title( '', false );
        // If viewing a post type archive by author.
        if ( is_author() )
            $this->add_user_archive_items();
    }
    /**
     * Adds the items to the trail items array for user (author) archives.
     *
     * @since  1.0.0
     * @access protected
     * @global object $wp_rewrite
     * @return void
     */
    protected function add_user_archive_items() {
        global $wp_rewrite;
        // Add $wp_rewrite->front to the trail.
        $this->add_rewrite_front_items();
        // Get the user ID.
        $user_id = get_query_var( 'author' );
        // If $author_base exists, check for parent pages.
        if ( ! empty( $wp_rewrite->author_base ) && ! is_post_type_archive() )
            $this->add_path_parents( $wp_rewrite->author_base );
        // Add the author's display name to the trail end.
        if ( is_paged() )
            $this->items[] = sprintf( '<a href="%s">%s</a>', esc_url( get_author_posts_url( $user_id ) ), get_the_author_meta( 'display_name', $user_id ) );
        elseif ( true === $this->args['show_title'] )
            $this->items[] = get_the_author_meta( 'display_name', $user_id );
    }
    /**
     * Adds the items to the trail items array for minute + hour archives.
     *
     * @since  1.0.0
     * @access protected
     * @return void
     */
    protected function add_minute_hour_archive_items() {
        // Add $wp_rewrite->front to the trail.
        $this->add_rewrite_front_items();
        // Add the minute + hour item.
        if ( true === $this->args['show_title'] )
            $this->items[] = sprintf( $this->labels['archive_minute_hour'], get_the_time( esc_html_x( 'g:i a', 'minute and hour archives time format', 'eveland' ) ) );
    }
    /**
     * Adds the items to the trail items array for minute archives.
     *
     * @since  1.0.0
     * @access protected
     * @return void
     */
    protected function add_minute_archive_items() {
        // Add $wp_rewrite->front to the trail.
        $this->add_rewrite_front_items();
        // Add the minute item.
        if ( true === $this->args['show_title'] )
            $this->items[] = sprintf( $this->labels['archive_minute'], get_the_time( esc_html_x( 'i', 'minute archives time format', 'eveland' ) ) );
    }
    /**
     * Adds the items to the trail items array for hour archives.
     *
     * @since  1.0.0
     * @access protected
     * @return void
     */
    protected function add_hour_archive_items() {
        // Add $wp_rewrite->front to the trail.
        $this->add_rewrite_front_items();
        // Add the hour item.
        if ( true === $this->args['show_title'] )
            $this->items[] = sprintf( $this->labels['archive_hour'], get_the_time( esc_html_x( 'g a', 'hour archives time format', 'eveland' ) ) );
    }
    /**
     * Adds the items to the trail items array for day archives.
     *
     * @since  1.0.0
     * @access protected
     * @return void
     */
    protected function add_day_archive_items() {
        // Add $wp_rewrite->front to the trail.
        $this->add_rewrite_front_items();
        // Get year, month, and day.
        $year  = sprintf( $this->labels['archive_year'],  get_the_time( esc_html_x( 'Y', 'yearly archives date format',  'eveland' ) ) );
        $month = sprintf( $this->labels['archive_month'], get_the_time( esc_html_x( 'F', 'monthly archives date format', 'eveland' ) ) );
        $day   = sprintf( $this->labels['archive_day'],   get_the_time( esc_html_x( 'j', 'daily archives date format',   'eveland' ) ) );
        // Add the year and month items.
        $this->items[] = sprintf( '<a href="%s">%s</a>', esc_url( get_year_link( get_the_time( 'Y' ) ) ), $year );
        $this->items[] = sprintf( '<a href="%s">%s</a>', esc_url( get_month_link( get_the_time( 'Y' ), get_the_time( 'm' ) ) ), $month );
        // Add the day item.
        if ( is_paged() )
            $this->items[] = sprintf( '<a href="%s">%s</a>', esc_url( get_day_link( get_the_time( 'Y' ) ), get_the_time( 'm' ), get_the_time( 'd' ) ), $day );
        elseif ( true === $this->args['show_title'] )
            $this->items[] = $day;
    }
    /**
     * Adds the items to the trail items array for week archives.
     *
     * @since  1.0.0
     * @access protected
     * @return void
     */
    protected function add_week_archive_items() {
        // Add $wp_rewrite->front to the trail.
        $this->add_rewrite_front_items();
        // Get the year and week.
        $year = sprintf( $this->labels['archive_year'],  get_the_time( esc_html_x( 'Y', 'yearly archives date format', 'eveland' ) ) );
        $week = sprintf( $this->labels['archive_week'],  get_the_time( esc_html_x( 'W', 'weekly archives date format', 'eveland' ) ) );
        // Add the year item.
        $this->items[] = sprintf( '<a href="%s">%s</a>', esc_url( get_year_link( get_the_time( 'Y' ) ) ), $year );
        // Add the week item.
        if ( is_paged() )
            $this->items[] = esc_url( get_archives_link( add_query_arg( array( 'm' => get_the_time( 'Y' ), 'w' => get_the_time( 'W' ) ), home_url('/') ), $week, false ) );
        elseif ( true === $this->args['show_title'] )
            $this->items[] = $week;
    }
    /**
     * Adds the items to the trail items array for month archives.
     *
     * @since  1.0.0
     * @access protected
     * @return void
     */
    protected function add_month_archive_items() {
        // Add $wp_rewrite->front to the trail.
        $this->add_rewrite_front_items();
        // Get the year and month.
        $year  = sprintf( $this->labels['archive_year'],  get_the_time( esc_html_x( 'Y', 'yearly archives date format',  'eveland' ) ) );
        $month = sprintf( $this->labels['archive_month'], get_the_time( esc_html_x( 'F', 'monthly archives date format', 'eveland' ) ) );
        // Add the year item.
        $this->items[] = sprintf( '<a href="%s">%s</a>', esc_url( get_year_link( get_the_time( 'Y' ) ) ), $year );
        // Add the month item.
        if ( is_paged() )
            $this->items[] = sprintf( '<a href="%s">%s</a>', esc_url( get_month_link( get_the_time( 'Y' ), get_the_time( 'm' ) ) ), $month );
        elseif ( true === $this->args['show_title'] )
            $this->items[] = $month;
    }
    /**
     * Adds the items to the trail items array for year archives.
     *
     * @since  1.0.0
     * @access protected
     * @return void
     */
    protected function add_year_archive_items() {
        // Add $wp_rewrite->front to the trail.
        $this->add_rewrite_front_items();
        // Get the year.
        $year  = sprintf( $this->labels['archive_year'],  get_the_time( esc_html_x( 'Y', 'yearly archives date format',  'eveland' ) ) );
        // Add the year item.
        if ( is_paged() )
            $this->items[] = sprintf( '<a href="%s">%s</a>', esc_url( get_year_link( get_the_time( 'Y' ) ) ), $year );
        elseif ( true === $this->args['show_title'] )
            $this->items[] = $year;
    }
    /**
     * Adds the items to the trail items array for archives that don't have a more specific method
     * defined in this class.
     *
     * @since  1.0.0
     * @access protected
     * @return void
     */
    protected function add_default_archive_items() {
        // If this is a date-/time-based archive, add $wp_rewrite->front to the trail.
        if ( is_date() || is_time() )
            $this->add_rewrite_front_items();
        if ( true === $this->args['show_title'] )
            $this->items[] = $this->labels['archives'];
    }
    /**
     * Adds the items to the trail items array for search results.
     *
     * @since  1.0.0
     * @access protected
     * @return void
     */
    protected function add_search_items() {
        if ( is_paged() )
            $this->items[] = sprintf( '<a href="%s">%s</a>', esc_url( get_search_link() ), sprintf( $this->labels['search'], get_search_query() ) );
        elseif ( true === $this->args['show_title'] )
            $this->items[] = sprintf( $this->labels['search'], get_search_query() );
    }
    /**
     * Adds the items to the trail items array for 404 pages.
     *
     * @since  1.0.0
     * @access protected
     * @return void
     */
    protected function add_404_items() {
        if ( true === $this->args['show_title'] )
            $this->items[] = $this->labels['error_404'];
    }
    /**
     * Adds a specific post's parents to the items array.
     *
     * @since  1.0.0
     * @access protected
     * @param  int    $post_id
     * @return void
     */
    protected function add_post_parents( $post_id ) {
        $parents = array();
        while ( $post_id ) {
            // Get the post by ID.
            $post = get_post( $post_id );
            // If we hit a page that's set as the front page, bail.
            if ( 'page' == $post->post_type && 'page' == get_option( 'show_on_front' ) && $post_id == get_option( 'page_on_front' ) )
                break;
            // Add the formatted post link to the array of parents.
            $parents[] = sprintf( '<a href="%s">%s</a>', esc_url( get_permalink( $post_id ) ), get_the_title( $post_id ) );
            // If there's no longer a post parent, break out of the loop.
            if ( 0 >= $post->post_parent )
                break;
            // Change the post ID to the parent post to continue looping.
            $post_id = $post->post_parent;
        }
        // Get the post hierarchy based off the final parent post.
        $this->add_post_hierarchy( $post_id );
        // Display terms for specific post type taxonomy if requested.
        if ( ! empty( $this->post_taxonomy[ $post->post_type ] ) )
            $this->add_post_terms( $post_id, $this->post_taxonomy[ $post->post_type ] );
        // Merge the parent items into the items array.
        $this->items = array_merge( $this->items, array_reverse( $parents ) );
    }
    /**
     * Adds a specific post's hierarchy to the items array.  The hierarchy is determined by post type's
     * rewrite arguments and whether it has an archive page.
     *
     * @since  1.0.0
     * @access protected
     * @param  int    $post_id
     * @return void
     */
    protected function add_post_hierarchy( $post_id ) {
        // Get the post type.
        $post_type        = get_post_type( $post_id );
        $post_type_object = get_post_type_object( $post_type );
        // If this is the 'post' post type, get the rewrite front items and map the rewrite tags.
        if ( 'post' === $post_type ) {
            // Add $wp_rewrite->front to the trail.
            $this->add_rewrite_front_items();
            // Map the rewrite tags.
            $this->map_rewrite_tags( $post_id, get_option( 'permalink_structure' ) );
        }
        // If the post type has rewrite rules.
        elseif ( false !== $post_type_object->rewrite ) {
            // If 'with_front' is true, add $wp_rewrite->front to the trail.
            if ( $post_type_object->rewrite['with_front'] )
                $this->add_rewrite_front_items();
            // If there's a path, check for parents.
            if ( ! empty( $post_type_object->rewrite['slug'] ) )
                $this->add_path_parents( $post_type_object->rewrite['slug'] );
        }
        // If there's an archive page, add it to the trail.
        if ( $post_type_object->has_archive ) {
            // Add support for a non-standard label of 'archive_title' (special use case).
            $label = ! empty( $post_type_object->labels->archive_title ) ? $post_type_object->labels->archive_title : $post_type_object->labels->name;
            // Core filter hook.
            $label = apply_filters( 'post_type_archive_title', $label, $post_type_object->name );
            $this->items[] = sprintf( '<a href="%s">%s</a>', esc_url( get_post_type_archive_link( $post_type ) ), $label );
        }
        // Map the rewrite tags if there's a `%` in the slug.
        if ( 'post' !== $post_type && ! empty( $post_type_object->rewrite['slug'] ) && false !== strpos( $post_type_object->rewrite['slug'], '%' ) )
            $this->map_rewrite_tags( $post_id, $post_type_object->rewrite['slug'] );
    }
    /**
     * Gets post types by slug.  This is needed because the get_post_types() function doesn't exactly
     * match the 'has_archive' argument when it's set as a string instead of a boolean.
     *
     * @since  0.6.0
     * @access protected
     * @param  int    $slug  The post type archive slug to search for.
     * @return void
     */
    protected function get_post_types_by_slug( $slug ) {
        $return = array();
        $post_types = get_post_types( array(), 'objects' );
        foreach ( $post_types as $type ) {
            if ( $slug === $type->has_archive || ( true === $type->has_archive && $slug === $type->rewrite['slug'] ) )
                $return[] = $type;
        }
        return $return;
    }
    /**
     * Adds a post's terms from a specific taxonomy to the items array.
     *
     * @since  1.0.0
     * @access protected
     * @param  int     $post_id  The ID of the post to get the terms for.
     * @param  string  $taxonomy The taxonomy to get the terms from.
     * @return void
     */
    protected function add_post_terms( $post_id, $taxonomy ) {
        // Get the post type.
        $post_type = get_post_type( $post_id );
        // Get the post categories.
        $terms = get_the_terms( $post_id, $taxonomy );
        // Check that categories were returned.
        if ( $terms && ! is_wp_error( $terms ) ) {
            // Sort the terms by ID and get the first category.
            if ( function_exists( 'wp_list_sort' ) )
                $terms = wp_list_sort( $terms, 'term_id' );
            else
                usort( $terms, '_usort_terms_by_ID' );
            $term = get_term( $terms[0], $taxonomy );
            // If the category has a parent, add the hierarchy to the trail.
            if ( 0 < $term->parent )
                $this->add_term_parents( $term->parent, $taxonomy );
            // Add the category archive link to the trail.
            $this->items[] = sprintf( '<a href="%s">%s</a>', esc_url( get_term_link( $term, $taxonomy ) ), $term->name );
        }
    }
    /**
     * Get parent posts by path.  Currently, this method only supports getting parents of the 'page'
     * post type.  The goal of this function is to create a clear path back to home given what would
     * normally be a "ghost" directory.  If any page matches the given path, it'll be added.
     *
     * @since  1.0.0
     * @access protected
     * @param  string $path The path (slug) to search for posts by.
     * @return void
     */
    function add_path_parents( $path ) {
        // Trim '/' off $path in case we just got a simple '/' instead of a real path.
        $path = trim( $path, '/' );
        // If there's no path, return.
        if ( empty( $path ) )
            return;
        // Get parent post by the path.
        $post = get_page_by_path( $path );
        if ( ! empty( $post ) ) {
            $this->add_post_parents( $post->ID );
        }
        elseif ( is_null( $post ) ) {
            // Separate post names into separate paths by '/'.
            $path = trim( $path, '/' );
            preg_match_all( "/\/.*?\z/", $path, $matches );
            // If matches are found for the path.
            if ( isset( $matches ) ) {
                // Reverse the array of matches to search for posts in the proper order.
                $matches = array_reverse( $matches );
                // Loop through each of the path matches.
                foreach ( $matches as $match ) {
                    // If a match is found.
                    if ( isset( $match[0] ) ) {
                        // Get the parent post by the given path.
                        $path = str_replace( $match[0], '', $path );
                        $post = get_page_by_path( trim( $path, '/' ) );
                        // If a parent post is found, set the $post_id and break out of the loop.
                        if ( ! empty( $post ) && 0 < $post->ID ) {
                            $this->add_post_parents( $post->ID );
                            break;
                        }
                    }
                }
            }
        }
    }
    /**
     * Searches for term parents of hierarchical taxonomies.  This function is similar to the WordPress
     * function get_category_parents() but handles any type of taxonomy.
     *
     * @since  1.0.0
     * @param  int    $term_id  ID of the term to get the parents of.
     * @param  string $taxonomy Name of the taxonomy for the given term.
     * @return void
     */
    function add_term_parents( $term_id, $taxonomy ) {
        // Set up some default arrays.
        $parents = array();
        // While there is a parent ID, add the parent term link to the $parents array.
        while ( $term_id ) {
            // Get the parent term.
            $term = get_term( $term_id, $taxonomy );
            // Add the formatted term link to the array of parent terms.
            $parents[] = sprintf( '<a href="%s">%s</a>', esc_url( get_term_link( $term, $taxonomy ) ), $term->name );
            // Set the parent term's parent as the parent ID.
            $term_id = $term->parent;
        }
        // If we have parent terms, reverse the array to put them in the proper order for the trail.
        if ( ! empty( $parents ) )
            $this->items = array_merge( $this->items, array_reverse( $parents ) );
    }
    /**
     * Turns %tag% from permalink structures into usable links for the breadcrumb trail.  This feels kind of
     * hackish for now because we're checking for specific %tag% examples and only doing it for the 'post'
     * post type.  In the future, maybe it'll handle a wider variety of possibilities, especially for custom post
     * types.
     *
     * @since  0.6.0
     * @access protected
     * @param  int    $post_id ID of the post whose parents we want.
     * @param  string $path    Path of a potential parent page.
     * @param  array  $args    Mixed arguments for the menu.
     * @return array
     */
    protected function map_rewrite_tags( $post_id, $path ) {
        $post = get_post( $post_id );
        // Trim '/' from both sides of the $path.
        $path = trim( $path, '/' );
        // Split the $path into an array of strings.
        $matches = explode( '/', $path );
        // If matches are found for the path.
        if ( is_array( $matches ) ) {
            // Loop through each of the matches, adding each to the $trail array.
            foreach ( $matches as $match ) {
                // Trim any '/' from the $match.
                $tag = trim( $match, '/' );
                // If using the %year% tag, add a link to the yearly archive.
                if ( '%year%' == $tag )
                    $this->items[] = sprintf( '<a href="%s">%s</a>', esc_url( get_year_link( get_the_time( 'Y', $post_id ) ) ), sprintf( $this->labels['archive_year'], get_the_time( esc_html_x( 'Y', 'yearly archives date format',  'eveland' ) ) ) );
                // If using the %monthnum% tag, add a link to the monthly archive.
                elseif ( '%monthnum%' == $tag )
                    $this->items[] = sprintf( '<a href="%s">%s</a>', esc_url( get_month_link( get_the_time( 'Y', $post_id ), get_the_time( 'm', $post_id ) ) ), sprintf( $this->labels['archive_month'], get_the_time( esc_html_x( 'F', 'monthly archives date format', 'eveland' ) ) ) );
                // If using the %day% tag, add a link to the daily archive.
                elseif ( '%day%' == $tag )
                    $this->items[] = sprintf( '<a href="%s">%s</a>', esc_url( get_day_link( get_the_time( 'Y', $post_id ), get_the_time( 'm', $post_id ), get_the_time( 'd', $post_id ) ) ), sprintf( $this->labels['archive_day'], get_the_time( esc_html_x( 'j', 'daily archives date format', 'eveland' ) ) ) );
                // If using the %author% tag, add a link to the post author archive.
                elseif ( '%author%' == $tag )
                    $this->items[] = sprintf( '<a href="%s">%s</a>', esc_url( get_author_posts_url( $post->post_author ) ), get_the_author_meta( 'display_name', $post->post_author ) );
                // If using the %category% tag, add a link to the first category archive to match permalinks.
                elseif ( taxonomy_exists( trim( $tag, '%' ) ) ) {
                    // Force override terms in this post type.
                    $this->post_taxonomy[ $post->post_type ] = false;
                    // Add the post categories.
                    $this->add_post_terms( $post_id, trim( $tag, '%' ) );
                }
            }
        }
    }
}

[mohammadHM-AF]

i have migrated to this plugin " Schema plugin v1.7.8.1 " and have no id or any html markup issue anymore.