Fatal error: Uncaught Error: Object of class WP_Error could not be converted to string
in /home/zff/public_html/zff.hr/wp-content/themes/zff-theme/inc/functions/breadcrumbs.php on line 108

Call stack:

1. str_replace()
   wp-content/themes/zff-theme/inc/functions/breadcrumbs.php:108
2. the_breadcrumbs()
   wp-content/themes/zff-theme/index.php:696
3. include()
   wp-includes/template-loader.php:106
4. require_once()
   wp-blog-header.php:19
5. require()
   index.php:17