Title: Warning: Cannot modify header
Last modified: November 30, 2016

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# Warning: Cannot modify header

 *  Resolved [go0gst3r](https://wordpress.org/support/users/go0gst3r/)
 * (@go0gst3r)
 * [9 years, 6 months ago](https://wordpress.org/support/topic/warning-cannot-modify-header-6/)
 * Hey there,
 * Seem to be having some warning messages, one of which I think is from this plugin!
   I am thankful for any advice in advance!
 * My site was fine before bed last night, I woke up to a few error messages this
   morning.
 * Warning: Cannot modify header information – headers already sent by (output started
   at /home/content/30/8629730/html/wp-config.php:45) in /home/content/30/8629730/
   html/wp-content/plugins/under-construction-page/under-construction.php on line
   196
 * A cache plugin was making it hard for me to make changes to the site so I had
   to deactivate. Im sure that could have something to do with it.
 * Thank you!
    -  This topic was modified 9 years, 6 months ago by [go0gst3r](https://wordpress.org/support/users/go0gst3r/).

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

 *  Plugin Author [WebFactory](https://wordpress.org/support/users/webfactory/)
 * (@webfactory)
 * [9 years, 6 months ago](https://wordpress.org/support/topic/warning-cannot-modify-header-6/#post-8496332)
 * Hi, sorry to hear you’re having problems 🙁
    Can you please tell us what caching
   plugin you’re using?
 * Thanks!
 *  Plugin Author [WebFactory](https://wordpress.org/support/users/webfactory/)
 * (@webfactory)
 * [9 years, 6 months ago](https://wordpress.org/support/topic/warning-cannot-modify-header-6/#post-8496975)
 * One more thing; your wp-config.php is outputting something on line #45. It should
   definitely not do that. So please check that line. You should do this regardless
   of our plugin …

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

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

 * ![](https://ps.w.org/under-construction-page/assets/icon-256x256.gif?rev=2284849)
 * [Under Construction](https://wordpress.org/plugins/under-construction-page/)
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 * 2 replies
 * 2 participants
 * Last reply from: [WebFactory](https://wordpress.org/support/users/webfactory/)
 * Last activity: [9 years, 6 months ago](https://wordpress.org/support/topic/warning-cannot-modify-header-6/#post-8496975)
 * Status: resolved