Uncaught Error: Class "WPSEO_Admin_Bar_Menu" not found
in /furanet/sites/cas-training.com/web/htdocs/wp-content/plugins/wordpress-seo/inc/wpseo-non-ajax-functions.php on line 20

Call stack:

1. wpseo_initialize_admin_bar('')
   wp-includes/class-wp-hook.php:324
2. WP_Hook::apply_filters(false, array)
   wp-includes/class-wp-hook.php:348
3. WP_Hook::do_action(array)
   wp-includes/plugin.php:517
4. do_action('wp_loaded')
   wp-settings.php:749
5. require_once('/furanet/sites/cas-t...docs/wp-settings.php')
   wp-config.php:95
6. require_once('/furanet/sites/cas-t...htdocs/wp-config.php')
   wp-load.php:50
7. require_once('/furanet/sites/cas-t...b/htdocs/wp-load.php')
   wp-blog-header.php:13
8. require('/furanet/sites/cas-t...s/wp-blog-header.php')
   index.php:17