Warning: Cannot modify header information

  • Hey, thanks for the module.

    Got an error on maintenance page using 2.03 version.

    Warning: Cannot modify header information - headers already sent by (output started at /var/www/vhosts/zzzzz.com/httpdocs/wp-includes/functions.php:3201) in /var/www/vhosts/ZZZZZ.com/httpdocs/wp-content/plugins/wp-maintenance-mode/includes/classes/wp-maintenance-mode.php on line 502

    Thanks for your help.

    https://www.ads-software.com/plugins/wp-maintenance-mode/

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  • Hello manouille,

    “output started at /var/www/vhosts/zzzzz.com/httpdocs/wp-includes/functions.php:3201” – means that one of your plugins is using a deprecated function from WordPress and is outputting the message.
    You can find out who’s causing the problem by activate debug from wp-config.php:

    define('WP_DEBUG', true);
define('WP_DEBUG_LOG', true);
define('WP_DEBUG_DISPLAY', false);

    All php notices/warnings/errors will be saved into /wp-content/debug.log. After you find the problem… is recommended to turn WP_DEBUG_LOG to false:

    define('WP_DEBUG_LOG', false);

    Thanks.

    Thread Starter manouille

    (@manouille)

    Thanks Georges i will invistigate.

Viewing 2 replies - 1 through 2 (of 2 total)
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