오류가 나는곳의 주소를 알려주시면 더 빠르고 정확하게 답변 받을 수 있습니다.

오류 주소 : http://agc0527.ircbot.co.kr/


외부로그인을 넣고나서 로그인,로그아웃 됩니다.

그런데
외부로그인위에
Warning: Cannot modify header information - headers already sent by (output started at /home/agc0527/public_html/index.php:4) in /home/agc0527/public_html/common.php on line 8

Warning: Cannot modify header information - headers already sent by (output started at /home/agc0527/public_html/index.php:4) in /home/agc0527/public_html/head.sub.php on line 32

Warning: Cannot modify header information - headers already sent by (output started at /home/agc0527/public_html/index.php:4) in /home/agc0527/public_html/head.sub.php on line 34

Warning: Cannot modify header information - headers already sent by (output started at /home/agc0527/public_html/index.php:4) in /home/agc0527/public_html/head.sub.php on line 35

Warning: Cannot modify header information - headers already sent by (output started at /home/agc0527/public_html/index.php:4) in /home/agc0527/public_html/head.sub.php on line 36

Warning: Cannot modify header information - headers already sent by (output started at /home/agc0527/public_html/index.php:4) in /home/agc0527/public_html/head.sub.php on line 37

Warning: Cannot modify header information - headers already sent by (output started at /home/agc0527/public_html/index.php:4) in /home/agc0527/public_html/head.sub.php on line 38

라는 오류가 뜨네요.

설정을잘못한건지..

경로 똑같이 입력했고 comon 과 _comon 같은곳에 있습니다.
외부로그인 창은 잘되고 안되는것없는데 오류가 뜨네요.