http://sir.co.kr/bbs/board.php?bo_table=g4_skin&wr_id=72164&sca=&sfl=wr_subject&stx=%C4%DA%B8%E0%C6%AE+%C6%E4%C0%CC%C2%A1&sop=and

위의 내용대로 수정을 했는데

Warning: Cannot modify header information - headers already sent by (output started at /home1/mblaqpill/public_html/gnuboard4/bbs/board.php:1) in /home1/mblaqpill/public_html/gnuboard4/common.php on line 8

Warning: Cannot modify header information - headers already sent by (output started at /home1/mblaqpill/public_html/gnuboard4/bbs/board.php:1) in /home1/mblaqpill/public_html/gnuboard4/head.sub.php on line 32

Warning: Cannot modify header information - headers already sent by (output started at /home1/mblaqpill/public_html/gnuboard4/bbs/board.php:1) in /home1/mblaqpill/public_html/gnuboard4/head.sub.php on line 34

Warning: Cannot modify header information - headers already sent by (output started at /home1/mblaqpill/public_html/gnuboard4/bbs/board.php:1) in /home1/mblaqpill/public_html/gnuboard4/head.sub.php on line 35

Warning: Cannot modify header information - headers already sent by (output started at /home1/mblaqpill/public_html/gnuboard4/bbs/board.php:1) in /home1/mblaqpill/public_html/gnuboard4/head.sub.php on line 36

Warning: Cannot modify header information - headers already sent by (output started at /home1/mblaqpill/public_html/gnuboard4/bbs/board.php:1) in /home1/mblaqpill/public_html/gnuboard4/head.sub.php on line 37

Warning: Cannot modify header information - headers already sent by (output started at /home1/mblaqpill/public_html/gnuboard4/bbs/board.php:1) in /home1/mblaqpill/public_html/gnuboard4/head.sub.php on line 38

이렇게 에러 메시지가 뜨네요ㅜㅜ
어떻게 해야 좋을지 모르겠어서 문의드립니다.

완전 초보라서 경고가 무슨 의미인지도, 그리고 해결은 어떻게 할지도 아예 모르겠어요ㅜㅜ