Warning: call_user_func() expects parameter 1 to be a valid callback, class 'WPSEO_Option_Titles' not found in /var/www/html/wp-content/plugins/wordpress-seo/inc/options/class-wpseo-options.php on line 63

Fatal error: Uncaught TypeError: Argument 1 passed to WPSEO_Options::register_option() must be an instance of WPSEO_Option, null given, called in /var/www/html/wp-content/plugins/wordpress-seo/inc/options/class-wpseo-options.php on line 63 and defined in /var/www/html/wp-content/plugins/wordpress-seo/inc/options/class-wpseo-options.php:95 Stack trace: #0 /var/www/html/wp-content/plugins/wordpress-seo/inc/options/class-wpseo-options.php(63): WPSEO_Options::register_option(NULL) #1 /var/www/html/wp-content/plugins/wordpress-seo/inc/options/class-wpseo-options.php(84): WPSEO_Options->__construct() #2 /var/www/html/wp-content/plugins/wordpress-seo/wp-seo-main.php(290): WPSEO_Options::get_instance() #3 /var/www/html/wp-includes/class-wp-hook.php(288): wpseo_init('') #4 /var/www/html/wp-includes/class-wp-hook.php(312): WP_Hook->apply_filters(NULL, Array) #5 /var/www/html/wp-includes/plugin.php(478): WP_Hook->do_action(Array) #6 /var/www/html/wp-settings.php(392): do_action('plugins_loaded') #7 /var/www/html/wp-config.php(115): in /var/www/html/wp-content/plugins/wordpress-seo/inc/options/class-wpseo-options.php on line 95