Title: Error in version 3.0
Last modified: January 30, 2026

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# Error in version 3.0

 *  [patrikmuse](https://wordpress.org/support/users/patrikmuse/)
 * (@patrikmuse)
 * [4 months, 1 week ago](https://wordpress.org/support/topic/error-in-version-3-0/)
 * When an editor tries to edit a page in the WordPress admin area, the screen becomes
   completely white.
 * In the PHP error log, the following warnings are generated:
 * `[30-Jan-2026 10:09:35 UTC] PHP Warning: Cannot modify header information - headers
   already sent by (output started at /home/fcitestadm1n/public_html/wp-admin/includes/
   template.php:2663) in /home/fcitestadm1n/public_html/wp-includes/pluggable.php
   on line 1531 [30-Jan-2026 10:09:35 UTC] PHP Warning: Cannot modify header information-
   headers already sent by (output started at /home/fcitestadm1n/public_html/wp-
   admin/includes/template.php:2663) in /home/fcitestadm1n/public_html/wp-includes/
   pluggable.php on line 1534`
   If the plugin is disabled, the issue disappears and
   the editor can modify pages normally.

Viewing 1 replies (of 1 total)

 *  Thread Starter [patrikmuse](https://wordpress.org/support/users/patrikmuse/)
 * (@patrikmuse)
 * [4 months, 1 week ago](https://wordpress.org/support/topic/error-in-version-3-0/#post-18808856)
 * This plugin is supported?

Viewing 1 replies (of 1 total)

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 * 1 reply
 * 1 participant
 * Last reply from: [patrikmuse](https://wordpress.org/support/users/patrikmuse/)
 * Last activity: [4 months, 1 week ago](https://wordpress.org/support/topic/error-in-version-3-0/#post-18808856)
 * Status: not resolved