Title: PHP Warning – Headers
Last modified: March 6, 2026

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# PHP Warning – Headers

 *  [Suyta](https://wordpress.org/support/users/suygenneris/)
 * (@suygenneris)
 * [1 month, 1 week ago](https://wordpress.org/support/topic/php-warning-headers/)
 * Hi there
 * I get thousands of PHP warnings like this:
 *     ```wp-block-code
       PHP Warning:  Cannot modify header information - headers already sent in /site_path/wp-content/plugins/advanced-ads-pro/includes/class-visitor-cookie.php on line 52
       ```
   
 * Maybe because I use Cookie plugin?
 * Any advice is welcome.
 * Many thanks!

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

 *  Plugin Support [ahmeddr](https://wordpress.org/support/users/ahmeddr/)
 * (@ahmeddr)
 * [1 month, 1 week ago](https://wordpress.org/support/topic/php-warning-headers/#post-18843647)
 * Hi [@suygenneris](https://wordpress.org/support/users/suygenneris/),
 * Thanks for reaching out!
 * We are currently working on fixing this issue, and the fix will be included in
   the next update. I kindly ask for your patience until then.
 * If possible, you can disabling debug logging in WordPress, and only enable it
   when needed:
 * define( ‘WP_DEBUG’, false );
   define( ‘WP_DEBUG_DISPLAY’, false );@ini_set( ‘display_errors’,
   0 );
 * Have a great day!
 * Best regards,
 *  Thread Starter [Suyta](https://wordpress.org/support/users/suygenneris/)
 * (@suygenneris)
 * [1 month, 1 week ago](https://wordpress.org/support/topic/php-warning-headers/#post-18843834)
 * Thanks a lot [@ahmeddr](https://wordpress.org/support/users/ahmeddr/) !
 * I will wait for the next update.

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

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 * 2 replies
 * 2 participants
 * Last reply from: [Suyta](https://wordpress.org/support/users/suygenneris/)
 * Last activity: [1 month, 1 week ago](https://wordpress.org/support/topic/php-warning-headers/#post-18843834)
 * Status: not resolved