wordpress后台Warning:Cannot modify header information在后台更新文章的时候会显示这个Warning:Cannot modify header information - headers already sent by (output started at D:\APMServ5.2.6\www\htdocs\wp\wp-content\themes\yuandong\functio

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wordpress后台Warning:Cannotmodifyheaderinformation在后台更新文章的时候会显示这个Warning:Cannotmodifyheaderinformation

wordpress后台Warning:Cannot modify header information在后台更新文章的时候会显示这个Warning:Cannot modify header information - headers already sent by (output started at D:\APMServ5.2.6\www\htdocs\wp\wp-content\themes\yuandong\functio
wordpress后台Warning:Cannot modify header information
在后台更新文章的时候会显示这个Warning:Cannot modify header information - headers already sent by (output started at D:\APMServ5.2.6\www\htdocs\wp\wp-content\themes\yuandong\functions.php:1) in D:\APMServ5.2.6\www\htdocs\wp\wp-includes\pluggable.php on line 934
请问怎么解决