We are experiencing similar issues.
An error of type E_ERROR was caused in line 115 of the file /nas/content/live/website-name/wp-content/plugins/wordpress-seo/admin/class-admin.php. Error message: Uncaught Error: Class ‘WPSEO_Admin_Settings_Changed_Listener’ not found in /nas/content/live/website-name/wp-content/plugins/wordpress-seo/admin/class-admin.php:115
Stack trace:
#0 /nas/content/live/website-name/wp-content/plugins/wordpress-seo/admin/class-admin-init.php(31): WPSEO_Admin->__construct()
#1 /nas/content/live/website-name/wp-content/plugins/wordpress-seo/wp-seo-main.php(421): WPSEO_Admin_Init->__construct()
#2 [internal function]: wpseo_admin_init(”)
#3 /nas/content/live/website-name/wp-includes/class-wp-hook.php(286): call_user_func_array(‘wpseo_admin_ini…’, Array)
#4 /nas/content/live/website-name/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(NULL, Array)
#5 /nas/content/live/website-name/wp-includes/plugin.php(465): WP_Hook->do_action(Array)
#6 /nas/content/live/website-name/wp-settings.php(394): do_action(‘plugins_loaded’)
#7 /nas/content/live/website-name/wp-config.php(120): require_once(‘/nas/content/li…’)
#8 /nas/content/live/website-name/wp-load.php(37): require_once(‘/nas/content/li…’)
#9 /nas/content/
