Path '/usr/themes/main/assets/data/pgp_pub_key.txt' not found

Typecho\Router\Exception: Path '/usr/themes/main/assets/data/pgp_pub_key.txt' not found in /root/web/yuu/var/Typecho/Router.php:103 Stack trace: #0 /root/web/yuu/index.php(23): Typecho\Router::dispatch() #1 {main}