Title: [Plugin: WordPress Wiki] Cannot modify header information
Last modified: August 19, 2016

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# [Plugin: WordPress Wiki] Cannot modify header information

 *  [wibbler](https://wordpress.org/support/users/wibbler/)
 * (@wibbler)
 * [16 years, 4 months ago](https://wordpress.org/support/topic/plugin-wordpress-wiki-canot-modify-header-information/)
 * I get an error with the WordPress Wiki plugin after a fresh installation. When
   I save any page after activating the plugin, I get this:
 * Warning: Invalid argument supplied for foreach() in /data02/magnolia/public_html/
   wp-content/plugins/wordpress-wiki/wordpress-wiki.php on line 740
 * Warning: Cannot modify header information – headers already sent by (output started
   at /data02/magnolia/public_html/wp-content/plugins/wordpress-wiki/wordpress-wiki.
   php:740) in /data02/magnolia/public_html/wp-includes/pluggable.php on line 868

Viewing 1 replies (of 1 total)

 *  [kodoz](https://wordpress.org/support/users/kodoz/)
 * (@kodoz)
 * [16 years, 1 month ago](https://wordpress.org/support/topic/plugin-wordpress-wiki-canot-modify-header-information/#post-1375387)
 * try disabling all your plug-ins.

Viewing 1 replies (of 1 total)

The topic ‘[Plugin: WordPress Wiki] Cannot modify header information’ is closed 
to new replies.

 * 1 reply
 * 2 participants
 * Last reply from: [kodoz](https://wordpress.org/support/users/kodoz/)
 * Last activity: [16 years, 1 month ago](https://wordpress.org/support/topic/plugin-wordpress-wiki-canot-modify-header-information/#post-1375387)
 * Status: not resolved

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