Title: Headers
Last modified: March 3, 2020

---

# Headers

 *  [slipperyman](https://wordpress.org/support/users/slipperyman/)
 * (@slipperyman)
 * [6 years, 2 months ago](https://wordpress.org/support/topic/headers-19/)
 * Having this error logged:
    PHP Warning: Cannot modify header information – headers
   already sent in xxxxxx/wp-content/plugins/gridlist-view-for-woocommerce/includes/
   functions.php on line 25

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Plugin Author [Dmytro Holovnia](https://wordpress.org/support/users/dholovnia/)
 * (@dholovnia)
 * [6 years, 2 months ago](https://wordpress.org/support/topic/headers-19/#post-12507540)
 * Are you using version 1.1.0.4?
    Could you please copy few errors before provided?
   We have there function `setcookie` that is not outputting content.
 *  Thread Starter [slipperyman](https://wordpress.org/support/users/slipperyman/)
 * (@slipperyman)
 * [6 years, 2 months ago](https://wordpress.org/support/topic/headers-19/#post-12508027)
 * Hi. Version:1.1.0.4
    [03-Mar-2020 12:28:32 UTC] PHP Warning: Cannot modify header
   information – headers already sent in xxxxxxxxx/wp-content/plugins/gridlist-view-
   for-woocommerce/includes/functions.php on line 25 [03-Mar-2020 12:28:54 UTC] 
   PHP Notice: Undefined index: action_wssvs_op in xxxxxxxxx/wp-content/plugins/
   woo-show-single-variations-shop-category/includes/WSSVSC_Admin.php on line 229[
   03-Mar-2020 12:28:54 UTC] PHP Warning: Cannot modify header information – headers
   already sent inxxxxxxxxx/wp-content/plugins/gridlist-view-for-woocommerce/includes/
   functions.php on line 25 [03-Mar-2020 12:28:56 UTC] PHP Warning: Cannot modify
   header information – headers already sent in xxxxxxxxx/wp-content/plugins/gridlist-
   view-for-woocommerce/includes/functions.php on line 25 [03-Mar-2020 12:29:32 
   UTC] PHP Warning: Cannot modify header information – headers already sent in 
   xxxxxxxxx/wp-content/plugins/gridlist-view-for-woocommerce/includes/functions.
   php on line 25 [03-Mar-2020 12:29:44 UTC] PHP Warning: Cannot modify header information–
   headers already sent in xxxxxxxxx/wp-content/plugins/gridlist-view-for-woocommerce/
   includes/functions.php on line 25 [03-Mar-2020 12:31:51 UTC] PHP Warning: Cannot
   modify header information – headers already sent in xxxxxxxxx/wp-content/plugins/
   gridlist-view-for-woocommerce/includes/functions.php on line 25 [03-Mar-2020 
   12:31:53 UTC] PHP Warning: PHP Warning: Cannot modify header information – headers
   already sent in xxxxxxxxx/wp-content/plugins/gridlist-view-for-woocommerce/includes/
   functions.php on line 25
 *  Plugin Author [RazyRx](https://wordpress.org/support/users/razyrx/)
 * (@razyrx)
 * [6 years, 2 months ago](https://wordpress.org/support/topic/headers-19/#post-12511034)
 * Hello [@slipperyman](https://wordpress.org/support/users/slipperyman/),
 * It means that some other plugin or theme display something on the page in incorrect
   way, because our plugin set cookie before init or any other WordPress hooks.
 * Please try to disable other plugins and check the issue.
    If it do not help, 
   then try to change theme to WordPress default (like Twenty Twenty)
 * Regards,
    Oleg

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Headers’ is closed to new replies.

 * ![](https://ps.w.org/gridlist-view-for-woocommerce/assets/icon-256x256.gif?rev
   =2772697)
 * [Grid/List View for WooCommerce](https://wordpress.org/plugins/gridlist-view-for-woocommerce/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/gridlist-view-for-woocommerce/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/gridlist-view-for-woocommerce/)
 * [Active Topics](https://wordpress.org/support/plugin/gridlist-view-for-woocommerce/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/gridlist-view-for-woocommerce/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/gridlist-view-for-woocommerce/reviews/)

 * 3 replies
 * 3 participants
 * Last reply from: [RazyRx](https://wordpress.org/support/users/razyrx/)
 * Last activity: [6 years, 2 months ago](https://wordpress.org/support/topic/headers-19/#post-12511034)
 * Status: not resolved