관리자페이지에서 전체메뉴케쉬생성을 하면 아래와 같은 오류메세지가 출력이 됩니다.
왜 그런건지 고수님들에게 질문 드립니다.
얼마전까지는 안생겼는데....왜 이런게 생기는 건가요??

Warning: fopen(../../data/mw.cache/group-G05) [function.fopen]: failed to open stream: Invalid argument in F:\public_html\hwado\ver1\lib\mw.cache.lib.php on line 59

Warning: fwrite(): supplied argument is not a valid stream resource in F:\public_html\hwado\ver1\lib\mw.cache.lib.php on line 60

Warning: fclose(): supplied argument is not a valid stream resource in F:\public_html\hwado\ver1\lib\mw.cache.lib.php on line 61

Warning: Cannot modify header information - headers already sent by (output started at F:\public_html\hwado\ver1\lib\mw.cache.lib.php:59) in F:\public_html\hwado\ver1\adm\head.sub.php on line 32

Warning: Cannot modify header information - headers already sent by (output started at F:\public_html\hwado\ver1\lib\mw.cache.lib.php:59) in F:\public_html\hwado\ver1\adm\head.sub.php on line 34

Warning: Cannot modify header information - headers already sent by (output started at F:\public_html\hwado\ver1\lib\mw.cache.lib.php:59) in F:\public_html\hwado\ver1\adm\head.sub.php on line 35

Warning: Cannot modify header information - headers already sent by (output started at F:\public_html\hwado\ver1\lib\mw.cache.lib.php:59) in F:\public_html\hwado\ver1\adm\head.sub.php on line 36

Warning: Cannot modify header information - headers already sent by (output started at F:\public_html\hwado\ver1\lib\mw.cache.lib.php:59) in F:\public_html\hwado\ver1\adm\head.sub.php on line 37

Warning: Cannot modify header information - headers already sent by (output started at F:\public_html\hwado\ver1\lib\mw.cache.lib.php:59) in F:\public_html\hwado\ver1\adm\head.sub.php on line 38