Breadcrumb problem after update

Fatal error: Uncaught Error: Object of class WP_Error could not be converted to string
in /.../wp-content/themes/transportex/inc/icy/breadcrumb.php on line 63

Call stack:

    transportex_custom_breadcrumbs()
    wp-content/themes/transportex/index-banner.php:19
    require()
    wp-includes/template.php:732
    load_template()
    wp-includes/template.php:676
    locate_template()
    wp-includes/general-template.php:204
    get_template_part()
    wp-content/themes/transportex/single.php:2
    include()
    wp-includes/template-loader.php:106
    require_once()
    wp-blog-header.php:19
    require()
    index.php:17