서버 리부팅 후에 로그인이 안되네요...

소스를 수정한 부분은 없는데, 관리자로 로그인하면 자연스럽게 화면은 넘어가지지만

로그인이 상된 상태를 유지하고 있습니다..

아피치 에로 로그는 아래와 같습니다~

[Sun Oct 25 10:06:10 2015] [error] [client 218.148.50.67] PHP Warning:  Unknown: open(/APP/topspin/data/session/sess_571vhiiqcjf39rstm5mvnlfvu3, O_RDWR) failed: Permission denied (13) in Unknown on line 0, referer: http://new.topspin.kr/
[Sun Oct 25 10:06:10 2015] [error] [client 218.148.50.67] PHP Warning:  Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/APP/topspin/data/session) in Unknown on line 0, referer: http://new.topspin.kr/
[Sun Oct 25 10:06:17 2015] [error] [client 218.148.50.67] PHP Warning:  Unknown: open(/APP/topspin/data/session/sess_571vhiiqcjf39rstm5mvnlfvu3, O_RDWR) failed: Permission denied (13) in Unknown on line 0, referer: http://new.topspin.kr/bbs/login.php?url=%2F
[Sun Oct 25 10:06:17 2015] [error] [client 218.148.50.67] PHP Warning:  Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/APP/topspin/data/session) in Unknown on line 0, referer: http://new.topspin.kr/bbs/login.php?url=%2F
[Sun Oct 25 10:06:17 2015] [error] [client 218.148.50.67] PHP Warning:  fopen(/APP/topspin/data/cache/latest-notice-shop_basic-5-30.php): failed to open stream: Permission denied in /APP/topspin/lib/latest.lib.php on line 56, referer: http://new.topspin.kr/bbs/login.php?url=%2F
[Sun Oct 25 10:06:17 2015] [error] [client 218.148.50.67] PHP Warning:  fwrite() expects parameter 1 to be resource, boolean given in /APP/topspin/lib/latest.lib.php on line 58, referer: http://new.topspin.kr/bbs/login.php?url=%2F
[Sun Oct 25 10:06:17 2015] [error] [client 218.148.50.67] PHP Warning:  fclose() expects parameter 1 to be resource, boolean given in /APP/topspin/lib/latest.lib.php on line 59, referer: http://new.topspin.kr/bbs/login.php?url=%2F
[Sun Oct 25 10:06:17 2015] [error] [client 218.148.50.67] PHP Warning:  fopen(/APP/topspin/data/cache/latest-free-shop_basic-5-25.php): failed to open stream: Permission denied in /APP/topspin/lib/latest.lib.php on line 56, referer: http://new.topspin.kr/bbs/login.php?url=%2F
[Sun Oct 25 10:06:17 2015] [error] [client 218.148.50.67] PHP Warning:  fwrite() expects parameter 1 to be resource, boolean given in /APP/topspin/lib/latest.lib.php on line 58, referer: http://new.topspin.kr/bbs/login.php?url=%2F
[Sun Oct 25 10:06:17 2015] [error] [client 218.148.50.67] PHP Warning:  fclose() expects parameter 1 to be resource, boolean given in /APP/topspin/lib/latest.lib.php on line 59, referer: http://new.topspin.kr/bbs/login.php?url=%2F
[Sun Oct 25 10:06:17 2015] [error] [client 218.148.50.67] PHP Warning:  fopen(/APP/topspin/data/cache/latest-qa-shop_basic-5-20.php): failed to open stream: Permission denied in /APP/topspin/lib/latest.lib.php on line 56, referer: http://new.topspin.kr/bbs/login.php?url=%2F
[Sun Oct 25 10:06:17 2015] [error] [client 218.148.50.67] PHP Warning:  fwrite() expects parameter 1 to be resource, boolean given in /APP/topspin/lib/latest.lib.php on line 58, referer: http://new.topspin.kr/bbs/login.php?url=%2F
[Sun Oct 25 10:06:17 2015] [error] [client 218.148.50.67] PHP Warning:  fclose() expects parameter 1 to be resource, boolean given in /APP/topspin/lib/latest.lib.php on line 59, referer: http://new.topspin.kr/bbs/login.php?url=%2F
[Sun Oct 25 10:06:17 2015] [error] [client 218.148.50.67] PHP Warning:  Unknown: open(/APP/topspin/data/session/sess_571vhiiqcjf39rstm5mvnlfvu3, O_RDWR) failed: Permission denied (13) in Unknown on line 0, referer: http://new.topspin.kr/bbs/login.php?url=%2F
[Sun Oct 25 10:06:17 2015] [error] [client 218.148.50.67] PHP Warning:  Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/APP/topspin/data/session) in Unknown on line 0, referer: http://new.topspin.kr/bbs/login.php?url=%2F 

혹시 아시는 분은 답변 부탁드리겠습니다^^