Title: Error: Cannot modify header information…plugin conflict?
Last modified: August 20, 2016

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# Error: Cannot modify header information…plugin conflict?

 *  [databell96](https://wordpress.org/support/users/databell96/)
 * (@databell96)
 * [14 years, 5 months ago](https://wordpress.org/support/topic/error-cannot-modify-header-informationplugin-conflict/)
 * I just installed a new version of WP after moving databases and while that install
   was just fine, now there seems to be an issue with pluggable.php but not where
   I expected. This is the error I get when I try to activate or delete a plugin:
 * > Warning: Cannot modify header information – headers already sent by (output
   > started at /home/yoursite/public_html/wp-content/plugins/share-and-follow/share-
   > widget.php:389) in /home/yoursite/public_html/wp-includes/pluggable.php on 
   > line 934
 * So what’s at 934? This:
    `header("Location: $location", true, $status);`
 * So how can I correct this beyond just killing the Share and Follow plugin?

Viewing 5 replies - 1 through 5 (of 5 total)

 *  [esmi](https://wordpress.org/support/users/esmi/)
 * (@esmi)
 * [14 years, 5 months ago](https://wordpress.org/support/topic/error-cannot-modify-header-informationplugin-conflict/#post-2439349)
 * [Solving “headers already sent” warnings](http://codex.wordpress.org/FAQ_Troubleshooting#How_do_I_solve_the_Headers_already_sent_warning_problem.3F).
 *  Thread Starter [databell96](https://wordpress.org/support/users/databell96/)
 * (@databell96)
 * [14 years, 5 months ago](https://wordpress.org/support/topic/error-cannot-modify-header-informationplugin-conflict/#post-2439430)
 * I already went there. Not the right answer at all.
 *  [Catalin Pop](https://wordpress.org/support/users/catalin-it/)
 * (@catalin-it)
 * [14 years, 4 months ago](https://wordpress.org/support/topic/error-cannot-modify-header-informationplugin-conflict/#post-2439675)
 * I have the same error:
 * >  Warning: Cannot modify header information – headers already sent by (output
   > started at /home/xxxxxx/public_html/wp-content/plugins/share-and-follow/share-
   > widget.php:389) in /home/xxxxxx/public_html/wp-includes/pluggable.php on line
   > 687
 * It’s getting weird because I have the same website hosted on my local server 
   and it’s working fine…
 * Any suggestions, please ?
    Thanks.
 *  [Catalin Pop](https://wordpress.org/support/users/catalin-it/)
 * (@catalin-it)
 * [14 years, 4 months ago](https://wordpress.org/support/topic/error-cannot-modify-header-informationplugin-conflict/#post-2439676)
 * Here is what I did to solve it…
    After installing and enabling the plugin I got
   the errors when I tried to logout from admin section. I connected through FTP
   and I overwrite the following files with the ones in the original archive: **
   share-and-follow.php follow-widget.php saf-functions.php share-widget.php
 * The error was gone and everything’s working fine.
    I still don’t know what exactly
   changed but if I have time I’ll investigate. I hope it helps. Cheers.
 *  [andykillen](https://wordpress.org/support/users/andykillen/)
 * (@andykillen)
 * [14 years, 3 months ago](https://wordpress.org/support/topic/error-cannot-modify-header-informationplugin-conflict/#post-2439680)
 * very strange as the share widget is someway down the list of things that gets
   sent to the browser. Also it does not do anything to send stuff to the client
   before the loop or wp_head. I would say it was some sort of conflict but I cannot
   tell you what.

Viewing 5 replies - 1 through 5 (of 5 total)

The topic ‘Error: Cannot modify header information…plugin conflict?’ is closed to
new replies.

## Tags

 * [Cannot modify header information](https://wordpress.org/support/topic-tag/cannot-modify-header-information/)
 * [header](https://wordpress.org/support/topic-tag/header/)
 * [pluggable.php](https://wordpress.org/support/topic-tag/pluggable-php/)

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 5 replies
 * 4 participants
 * Last reply from: [andykillen](https://wordpress.org/support/users/andykillen/)
 * Last activity: [14 years, 3 months ago](https://wordpress.org/support/topic/error-cannot-modify-header-informationplugin-conflict/#post-2439680)
 * Status: not resolved

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