오류.. 부탁좀 드립니다.

항상 수고가 많으십니다.
아래 오류가 나는 데요.
어디에 문제가 있는지요.

Warning: include_once(../skin/board/club/list.skin.php) [function.include-once]: failed to open stream: No such file or directory in /web/home/ulsanall/html/bbs/list.php on line 151

Warning: include_once() [function.include]: Failed opening '../skin/board/club/list.skin.php' for inclusion (include_path='.:/usr/lib/php/pear') in /web/home/ulsanall/html/bbs/list.php on line 151