phpmyadmin에서 오류.. 도와주세요ㅜㅜ 채택완료

안녕하세요,

그누보드5 홈페이지 호스팅을 옮기면서 db이전을 phpmyadmin 프로그램을 이용해서 내보내기, 가져오기로 옮겼는데요

Warning: strtotime() [http://gas.fineweb.co.kr/phpMyAdmin_a/function.strtotime">function.strtotime]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Asia/Seoul' for 'KST/9.0/no DST' instead in /home/gas/phpMyAdmin_a/db_details_db_info.php on line 16 

이런식으로 오류문구가 나와서요..

홈페이지에는

Warning: include_once(./_index.php) [http://gas.fineweb.co.kr/bbs/function.include-once">function.include-once]: failed to open stream: No such file or directory in /home/gas/skin/member/basic/register.skin.php on line 9 Warning: include_once() [http://gas.fineweb.co.kr/bbs/function.include">function.include]: Failed opening './_index.php' for inclusion (include_path='.:/usr/local/lib/php') in /home/gas/skin/member/basic/register.skin.php on line 9

이렇게나오구요..

혹시 어떻게 해야하는지 조언해주실수 있으실까요~~?ㅜㅜ

감사합니다!