Title: Cannot modify header information
Last modified: August 20, 2016

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# Cannot modify header information

 *  [squadjot](https://wordpress.org/support/users/squadjot/)
 * (@squadjot)
 * [14 years, 7 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-46/)
 * I keep getting this error.
 * Warning: Cannot modify header information – headers already sent by (output started
   at /customers/a/6/4/mysite.com/httpd.www/site/wp-content/themes/twentyeleven/
   functions.php:2) in /customers/a/6/4/mysite.com/httpd.www/site/wp-includes/pluggable.
   php on line 934
 * Does anyone know how to fix it?

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

 *  [govpatel](https://wordpress.org/support/users/govpatel/)
 * (@govpatel)
 * [14 years, 7 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-46/#post-2336336)
 * replace wp-includes folder may be one the file is corrupted while uploading
 *  [esmi](https://wordpress.org/support/users/esmi/)
 * (@esmi)
 * [14 years, 7 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-46/#post-2336351)
 * And when did you start editing the Twenty Eleven theme?
 * Do not edit the Twenty Eleven theme. It is the default WordPress 3.2 theme and
   having access to an **unedited** version of the theme is vital when dealing with
   a range of site issues. Upload a [fresh copy of the theme](http://wordpress.org/extend/themes/twentyeleven)
   via FTP & [create a child theme for your changes](http://codex.wordpress.org/Child_Themes).

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

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

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 2 replies
 * 3 participants
 * Last reply from: [esmi](https://wordpress.org/support/users/esmi/)
 * Last activity: [14 years, 7 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-46/#post-2336351)
 * Status: not resolved

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