Fatal error: Uncaught TypeError: call_user_func(): Argument #1 ($callback) must be a valid callback, class "WPSEO_Option_Llmstxt" not found in /htdocs/wp-content/plugins/wordpress-seo/inc/options/class-wpseo-options.php:65
Stack trace:
#0 /htdocs/wp-content/plugins/wordpress-seo/inc/options/class-wpseo-options.php(88): WPSEO_Options->__construct()
#1 /htdocs/wp-content/plugins/wordpress-seo/wp-seo-main.php(327): WPSEO_Options::get_instance()
#2 /htdocs/wp-includes/class-wp-hook.php(353): wpseo_init('')
#3 /htdocs/wp-includes/class-wp-hook.php(377): WP_Hook->apply_filters(NULL, Array)
#4 /htdocs/wp-includes/plugin.php(523): WP_Hook->do_action(Array)
#5 /htdocs/wp-settings.php(630): do_action('plugins_loaded')
#6 /htdocs/wp-config.php(112): require_once('/htdocs/wp-sett...')
#7 /htdocs/wp-load.php(50): require_once('/htdocs/wp-conf...')
#8 /htdocs/wp-blog-header.php(13): require_once('/htdocs/wp-load...')
#9 /htdocs/index.php(17): require('/htdocs/wp-blog...')
#10 {main}
thrown in /htdocs/wp-content/plugins/wordpress-seo/inc/options/class-wpseo-options.php on line 65