Title: Error – modify header
Last modified: June 19, 2024

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# Error – modify header

 *  Resolved [farreby](https://wordpress.org/support/users/farreby/)
 * (@farreby)
 * [1 year, 11 months ago](https://wordpress.org/support/topic/error-modify-header/)
 * I get this error message, on WP-admin Frontpage:
   key “wp_limit” in /customers/
   4/9/0/farre-by.dk/httpd.www/wp-content/plugins/restore-classic-widgets/includes/
   diagnose/class_bill_diagnose.php on line 254 Warning: Cannot modify header information–
   headers already sent by (output started at /customers/4/9/0/farre-by.dk/httpd.
   www/wp-content/plugins/restore-classic-widgets/includes/diagnose/class_bill_diagnose.
   php:254) in /customers/4/9/0/farre-by.dk/httpd.www/wp-admin/includes/misc.php
   on line 1439 Warning: Cannot modify header information – headers already sent
   by (output started at /customers/4/9/0/farre-by.dk/httpd.www/wp-content/plugins/
   restore-classic-widgets/includes/diagnose/class_bill_diagnose.php:254) in /customers/
   4/9/0/farre-by.dk/httpd.www/wp-includes/functions.php on line 7096 Warning: Cannot
   modify header information – headers already sent by (output started at /customers/
   4/9/0/farre-by.dk/httpd.www/wp-content/plugins/restore-classic-widgets/includes/
   diagnose/class_bill_diagnose.php:254) in /customers/4/9/0/farre-by.dk/httpd.www/
   wp-admin/admin-header.php on line 9
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Ferror-modify-header%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

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

 *  Thread Starter [farreby](https://wordpress.org/support/users/farreby/)
 * (@farreby)
 * [1 year, 11 months ago](https://wordpress.org/support/topic/error-modify-header/#post-17836662)
 * And when trying to read more about the Author – this error occurs:
   Warning: Undefined
   array key “wp_limit” in /customers/4/9/0/farre-by.dk/httpd.www/wp-content/plugins/
   restore-classic-widgets/includes/diagnose/class_bill_diagnose.php on line 254
   Warning: Cannot modify header information – headers already sent by (output started
   at /customers/4/9/0/farre-by.dk/httpd.www/wp-content/plugins/restore-classic-
   widgets/includes/diagnose/class_bill_diagnose.php:254) in /customers/4/9/0/farre-
   by.dk/httpd.www/wp-admin/includes/misc.php on line 1439 Warning: Cannot modify
   header information – headers already sent by (output started at /customers/4/
   9/0/farre-by.dk/httpd.www/wp-content/plugins/restore-classic-widgets/includes/
   diagnose/class_bill_diagnose.php:254) in /customers/4/9/0/farre-by.dk/httpd.www/
   wp-includes/functions.php on line 7096 Warning: Cannot modify header information–
   headers already sent by (output started at /customers/4/9/0/farre-by.dk/httpd.
   www/wp-content/plugins/restore-classic-widgets/includes/diagnose/class_bill_diagnose.
   php:254) in /customers/4/9/0/farre-by.dk/httpd.www/wp-admin/includes/template.
   php on line 2136
 *  Plugin Author [sminozzi](https://wordpress.org/support/users/sminozzi/)
 * (@sminozzi)
 * [1 year, 11 months ago](https://wordpress.org/support/topic/error-modify-header/#post-17836737)
 * Hi Farreby,
 * Thank you for letting me know. It was only a warning (not error), but I have 
   fixed it and uploaded version 4.14.
 * Please let me know if you find any issues.
 * Regards,
   Bill

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

The topic ‘Error – modify header’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/restore-classic-widgets.svg)
 * [Restore and Enable Classic Widgets No Expiration](https://wordpress.org/plugins/restore-classic-widgets/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/restore-classic-widgets/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/restore-classic-widgets/)
 * [Active Topics](https://wordpress.org/support/plugin/restore-classic-widgets/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/restore-classic-widgets/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/restore-classic-widgets/reviews/)

 * 3 replies
 * 2 participants
 * Last reply from: [sminozzi](https://wordpress.org/support/users/sminozzi/)
 * Last activity: [1 year, 11 months ago](https://wordpress.org/support/topic/error-modify-header/#post-17836737)
 * Status: resolved