Title: luigi2016's Replies | WordPress.org

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# luigi2016

  [  ](https://wordpress.org/support/users/luigi2016/)

 *   [Profile](https://wordpress.org/support/users/luigi2016/)
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 *   [Replies Created](https://wordpress.org/support/users/luigi2016/replies/)
 *   [Reviews Written](https://wordpress.org/support/users/luigi2016/reviews/)
 *   [Topics Replied To](https://wordpress.org/support/users/luigi2016/replied-to/)
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## Forum Replies Created

Viewing 1 replies (of 1 total)

 *   Forum: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
   
   In reply to: [Warning: Cannot modify header information – headers already sent by](https://wordpress.org/support/topic/warning-cannot-modify-header-information-headers-already-sent-by-61/)
 *  [luigi2016](https://wordpress.org/support/users/luigi2016/)
 * (@luigi2016)
 * [9 years, 8 months ago](https://wordpress.org/support/topic/warning-cannot-modify-header-information-headers-already-sent-by-61/#post-8189638)
 * Hi! I a getting the folowing messages when i try to update any page of my website:
 * Warning: call_user_func_array() expects parameter 1 to be a valid callback, class‘
   WP1S_Class’ does not have a method ‘wp1s_upgrade_save’ in /home/stelvipro/public_html/
   wp-includes/plugin.php on line 524
 * Warning: Cannot modify header information – headers already sent by (output started
   at /home/stelvipro/public_html/wp-includes/plugin.php:524) in /home/stelvipro/
   public_html/wp-admin/post.php on line 197
 * Warning: Cannot modify header information – headers already sent by (output started
   at /home/stelvipro/public_html/wp-includes/plugin.php:524) in /home/stelvipro/
   public_html/wp-includes/pluggable.php on line 1174

Viewing 1 replies (of 1 total)