scriptId error

( ! ) Warning: Cannot modify header information - headers already sent by (output started at /home/users/1/jouki/web/jouki.co.jp/appprivate/php/inc/common/comFunc.php:636) in /home/users/1/jouki/web/jouki.co.jp/appprivate/php/inc/common/controller.php on line 29
Call Stack
#TimeMemoryFunctionLocation
10.0001221312{main}( ).../buy.php:0
20.0040670872require_once( '/home/users/1/jouki/web/jouki.co.jp/appprivate/php/inc/common/controller.php' ).../buy.php:21
30.01121873672dispError( ).../controller.php:165
40.01141875224header ( ).../controller.php:29