无法加载模块:ultralite

FILE: D:\WWW\core\Lib\Core\App.class.php 　LINE: 243

[25-05-09 16:12:05] D:\WWW\core\Lib\Core\App.class.php (243) _404(无法加载模块:ultralite)
[25-05-09 16:12:05] D:\WWW\core\Lib\Core\App.class.php (413) App::exec()
[25-05-09 16:12:05] D:\WWW\core\Lib\Core\Think.class.php (77) App::run()
[25-05-09 16:12:05] D:\WWW\core\Common\runtime.php (483) Think::start()
[25-05-09 16:12:05] D:\WWW\core\core.php (59) require(D:\WWW\core\Common\runtime.php)
[25-05-09 16:12:05] D:\WWW\index.php (57) require(D:\WWW\core\core.php)