Title: Cannot modify header information
Last modified: March 4, 2019

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# Cannot modify header information

 *  [Victor Rusu](https://wordpress.org/support/users/vicrus/)
 * (@vicrus)
 * [7 years, 3 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-147/)
 * Hi everybody!
 * This plugin is great but there is a problem whenever I am trying to add a new
   user from the dashboard. I get the following error:
 * Warning: Illegal string offset ‘es_registered’ in /home/obxmitro/public_html/
   obrc/wp-content/plugins/email-subscribers/includes/admin/class-es-handle-sync-
   wp-user.php on line 19
 * Warning: Cannot modify header information – headers already sent by (output started
   at /public_html/obrc/wp-content/plugins/email-subscribers/includes/admin/class-
   es-handle-sync-wp-user.php:19) in /public_html/obrc/wp-includes/pluggable.php
   on line 1251
 * Warning: Cannot modify header information – headers already sent by (output started
   at /public_html/obrc/wp-content/plugins/email-subscribers/includes/admin/class-
   es-handle-sync-wp-user.php:19) in /public_html/obrc/wp-includes/pluggable.php
   on line 1254
 * I’ve been using this plugin on many websites and this error is popping up on 
   all of them.
 * Did anybody have the same problem? How can we solve it?
 * Thank you!
    -  This topic was modified 7 years, 3 months ago by [Victor Rusu](https://wordpress.org/support/users/vicrus/).

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

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 * 0 replies
 * 1 participant
 * Last reply from: [Victor Rusu](https://wordpress.org/support/users/vicrus/)
 * Last activity: [7 years, 3 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-147/)
 * Status: not resolved