php error happened

Technical information
Error type2
Error descriptionCannot modify header information - headers already sent by (output started at /home/content/53/7722353/html/cpa_entry/2014/include/dbcommon.php:201)
URLwww.arkcda.org/cpa_entry/2014/login.php?
Error file/home/content/53/7722353/html/cpa_entry/2014/include/commonfunctions.php
Error line2604
SQL query

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