Questions about WP-Refer
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When I activate this plug-in(https://noprerequisite.com/archives/2004/06/10/wp-refer/),
I always got warning messages in many admin pages, such as when I create post or login. Here is the message: Cannot modify header information – headers already sent by (output started at /web/xxx.net/wordpress/wp-content/plugins/wp-refer.php:76) in /web/xxx.net/wordpress/wp-login.php on line 42, 43, 44, 45, 167, 168,…
What is this problem?
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Viewing 3 replies - 1 through 3 (of 3 total)
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