Title: Cannot modify header information
Last modified: February 20, 2025

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# Cannot modify header information

 *  [simbian](https://wordpress.org/support/users/simbian/)
 * (@simbian)
 * [1 year, 3 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-207/)
 * Hi, im using PHP 8.2 and i noticed this warning on the frontend using Query Monitor:
   
   Cannot modify header information – headers already sent by (output started at/
   home1/digitalk/public_html/wp-includes/functions.php:5464)wp-content/plugins/
   phastpress/sdk/phast.php:453
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fcannot-modify-header-information-207%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

The topic ‘Cannot modify header information’ is closed to new replies.

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## Tags

 * [php](https://wordpress.org/support/topic-tag/php/)
 * [warning](https://wordpress.org/support/topic-tag/warning/)

 * 0 replies
 * 1 participant
 * Last reply from: [simbian](https://wordpress.org/support/users/simbian/)
 * Last activity: [1 year, 3 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-207/)
 * Status: not resolved