Path '/sitemap.xml' not found

Typecho\Router\Exception: Path '/sitemap.xml' not found in /www/sites/blog.berfen.com/index/blog_berfen/var/Typecho/Router.php:103 Stack trace: #0 /www/sites/blog.berfen.com/index/blog_berfen/index.php(23): Typecho\Router::dispatch() #1 {main}