Title: Cannot Modify Header Information
Last modified: September 1, 2016

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# Cannot Modify Header Information

 *  [Studio Pence](https://wordpress.org/support/users/bpence/)
 * (@bpence)
 * [9 years, 9 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-127/)
 * I’m now experiencing a weird issue with this plugin. When I’m editing a post 
   type that includes a field with a Enhanced Message and I go to preview or publish
   the changes, I’m left with a white screen and the following message:
 * `Cannot modify header information - headers already sent by (output started at..../
   wp-content/plugins/acf-enhanced-message-field/acf-enhanced-message-v5.php:108)
   in /wp-includes/pluggable.php on line 1171`
 * Thanks for the help!
 * BTW, I’ve cross posted this on [GitHub](https://github.com/drebbits/acf-enhanced-message-field/issues)
   as well.
 * [https://wordpress.org/plugins/acf-enhanced-message-field/](https://wordpress.org/plugins/acf-enhanced-message-field/)

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Thread Starter [Studio Pence](https://wordpress.org/support/users/bpence/)
 * (@bpence)
 * [9 years, 9 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-127/#post-7710592)
 * Hey there Dreb Bits, any thoughts to this?
 *  Thread Starter [Studio Pence](https://wordpress.org/support/users/bpence/)
 * (@bpence)
 * [9 years, 9 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-127/#post-8195608)
 * I’m really at a loss on this error. I would really appreciate any help.
 *  Plugin Author [Dreb Bitanghol](https://wordpress.org/support/users/drebbitsweb/)
 * (@drebbitsweb)
 * [9 years, 6 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-127/#post-8505668)
 * Hey there, do you still experience this issue? I can’t seem to reproduce on my
   end. This might be related to this [resolved] issue [https://wordpress.org/support/topic/fatal-error-call-to-undefined-function-get_current_screen-14/](https://wordpress.org/support/topic/fatal-error-call-to-undefined-function-get_current_screen-14/)?
 * Thanks for reporting!

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Cannot Modify Header Information’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/acf-enhanced-message-field.svg)
 * [ACF Enhanced Message Field](https://wordpress.org/plugins/acf-enhanced-message-field/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/acf-enhanced-message-field/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/acf-enhanced-message-field/)
 * [Active Topics](https://wordpress.org/support/plugin/acf-enhanced-message-field/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/acf-enhanced-message-field/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/acf-enhanced-message-field/reviews/)

## Tags

 * [modify headers](https://wordpress.org/support/topic-tag/modify-headers/)
 * [pluggable](https://wordpress.org/support/topic-tag/pluggable/)

 * 3 replies
 * 2 participants
 * Last reply from: [Dreb Bitanghol](https://wordpress.org/support/users/drebbitsweb/)
 * Last activity: [9 years, 6 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-127/#post-8505668)
 * Status: not resolved