오류 문구가 떴어요.ㅜㅠ

상위와 좌측 메뉴가 있고,
좌측메뉴에서 클릭했을때 오른쪽에 뜨게끔 해봤더니.

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Warning: include_once(./_head_board.php) [function.include-once]: failed to open stream: No such file or directory in /web/home/do****/html/perfect/bbs/01.php on line 3

Warning: include_once() [function.include]: Failed opening './_head_board.php' for inclusion (include_path='.:/usr/share/pear') in /web/home/do****/html/perfect/bbs/01.php on line 3

Warning: include_once(../include/leftmenu/head_board.php) [function.include-once]: failed to open stream: No such file or directory in /web/home/do****/html/perfect/bbs/01.php on line 9

Warning: include_once() [function.include]: Failed opening '../include/leftmenu/head_board.php' for inclusion (include_path='.:/usr/share/pear') in /web/home/do****/html/perfect/bbs/01.php on line 9
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좌측 php 인크루드 한건 잘뜨는데 위에 head_board 라고 지정해 놓은 곳이 저렇게 오류가 떠요.ㅜㅠ
우앙.ㅜㅠ
인크루드 부른 경로가 틀린건지..제가 폴더에 잘못 넣은건지.ㅜㅠ
도와주세요.ㅜㅠ