Title: Error “Warning: Cannot modify header information”
Last modified: January 11, 2018

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# Error “Warning: Cannot modify header information”

 *  Resolved [bdnbomdianerd](https://wordpress.org/support/users/bdnbomdianerd/)
 * (@bdnbomdianerd)
 * [8 years, 5 months ago](https://wordpress.org/support/topic/error-warning-cannot-modify-header-information-7/)
 * Hello everyone!
    I was recently customizing my website, installing a new theme
   named POSITOR, which requested the installation of a plug-in. I installed the
   plug-in and since then I can’t login in my wp-admin to customize and access my
   website. Note that this theme was directly from the wordpress page. This message
   is appearing since the plug-in installation:
 * Warning: Cannot modify header information – headers already sent by (output started
   at /home/bomdi732/public_html/wp-content/themes/positor/inc/metaboxes.php:10)
   in /home/bomdi732/public_html/wp-includes/pluggable.php on line 1216
 * How can I fix this? Take note that I’m not a programmer.

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

 *  Moderator [Steven Stern (sterndata)](https://wordpress.org/support/users/sterndata/)
 * (@sterndata)
 * Volunteer Forum Moderator
 * [8 years, 5 months ago](https://wordpress.org/support/topic/error-warning-cannot-modify-header-information-7/#post-9855970)
 * I recommend asking at [https://wordpress.org/support/theme/positor#new-post](https://wordpress.org/support/theme/positor#new-post)
   so the plugin’s / theme’s developers and support community can help you with 
   this.
 * Meantime, delete the positor theme via FTP or your hosting control panel (delete`
   wp-content\themes\positor`) to get yoru site back.
 *  Thread Starter [bdnbomdianerd](https://wordpress.org/support/users/bdnbomdianerd/)
 * (@bdnbomdianerd)
 * [8 years, 5 months ago](https://wordpress.org/support/topic/error-warning-cannot-modify-header-information-7/#post-9855983)
 * Solved it using this video as guide [https://www.youtube.com/watch?v=ojZa3zTAHGo](https://www.youtube.com/watch?v=ojZa3zTAHGo)

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

The topic ‘Error “Warning: Cannot modify header information”’ is closed to new replies.

## Tags

 * [wp-admin](https://wordpress.org/support/topic-tag/wp-admin/)

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 2 replies
 * 2 participants
 * Last reply from: [bdnbomdianerd](https://wordpress.org/support/users/bdnbomdianerd/)
 * Last activity: [8 years, 5 months ago](https://wordpress.org/support/topic/error-warning-cannot-modify-header-information-7/#post-9855983)
 * Status: resolved

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