Title: Cannot modify header warning
Last modified: August 21, 2016

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# Cannot modify header warning

 *  [jmwallace10](https://wordpress.org/support/users/jmwallace10/)
 * (@jmwallace10)
 * [11 years, 10 months ago](https://wordpress.org/support/topic/cannot-modify-header-warning-3/)
 * Warning: Cannot modify header information – headers already sent by (output started
   at /home/jmwallace8/public_html/wp-content/themes/customizr/functions.php:252
 * This shows up when I try to change the slider on Customizr

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

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 0 replies
 * 1 participant
 * Last reply from: [jmwallace10](https://wordpress.org/support/users/jmwallace10/)
 * Last activity: [11 years, 10 months ago](https://wordpress.org/support/topic/cannot-modify-header-warning-3/)
 * Status: not resolved

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