Title: Cannot modify header information
Last modified: August 18, 2016

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# Cannot modify header information

 *  [acousticdryad](https://wordpress.org/support/users/acousticdryad/)
 * (@acousticdryad)
 * [19 years, 11 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-5/)
 * For some reason, the following error popped up. I haven’t changed anything with
   my files, and have no clue why this is showing up on the entry screen when I 
   open up a new entry to write:
 * Warning: Cannot modify header information – headers already sent by (output started
   at /home/dreamsi/public_html/mud/wp/wp-content/themes/neutral/functions.php:397)
   in /home/dreamsi/public_html/mud/wp/wp-admin/inline-uploading.php on line 5
 * Warning: Cannot modify header information – headers already sent by (output started
   at /home/dreamsi/public_html/mud/wp/wp-content/themes/neutral/functions.php:397)
   in /home/dreamsi/public_html/mud/wp/wp-admin/inline-uploading.php on line 140
 * And when I attempt to post one, I get this:
    Warning: Cannot modify header information–
   headers already sent by (output started at /home/dreamsi/public_html/mud/wp/wp-
   content/themes/neutral/functions.php:397) in /home/dreamsi/public_html/mud/wp/
   wp-admin/post.php on line 127
 * It just all happened out of the blue.

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

 *  [Pizdin Dim](https://wordpress.org/support/users/pizdin_dim/)
 * (@pizdin_dim)
 * [19 years, 11 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-5/#post-394542)
 * Check that you haven’t got a trailing carriage return or space at the end of 
   your theme file “functions.php”, that’s usually the problem. There should be 
   absolutely nothing after the `?>` at the end.
 *  Thread Starter [acousticdryad](https://wordpress.org/support/users/acousticdryad/)
 * (@acousticdryad)
 * [19 years, 11 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-5/#post-394643)
 * Looks like that was it, I’ll have to remember that. Thanks 🙂

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

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

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 2 replies
 * 2 participants
 * Last reply from: [acousticdryad](https://wordpress.org/support/users/acousticdryad/)
 * Last activity: [19 years, 11 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-5/#post-394643)
 * Status: not resolved

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