Title: Repeating PHP Warning: Cannot modify header information
Last modified: December 31, 2022

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# Repeating PHP Warning: Cannot modify header information

 *  Resolved [Website Rob](https://wordpress.org/support/users/website-rob/)
 * (@website-rob)
 * [3 years, 5 months ago](https://wordpress.org/support/topic/repeating-php-warning-cannot-modify-header-information/)
 * Using WP 6.1.1, PHP 7.4 and Contact Form by BestWebSoft v4.2.4 – I am seeing 
   this msg. in the site error logs on a repeating basis, and thus, filling up the
   error log.
 * [31-Dec-2022 09:34:35 UTC] PHP Warning: Cannot modify header information – headers
   already sent in /home/…/wp-content/plugins/contact-form-plugin/contact_form.php
   on line 90
 * I am also using Captcha by BestWebSoft v5.1.7 with Slide captcha enabled.
 * Is this error also being experienced by anybody else?

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

 *  Plugin Support [andrewsupport](https://wordpress.org/support/users/andrewsupport/)
 * (@andrewsupport)
 * [3 years, 5 months ago](https://wordpress.org/support/topic/repeating-php-warning-cannot-modify-header-information/#post-16341291)
 * Unfortunately, the error does not repeat on our local devices.
 * 1) Activate a default WordPress theme for a while (Twenty Nineteen or Twenty-
   Twenty) and check if the problem remains. 2) Deactivate all of your plugins except
   Contact Form and Captcha and also check if the problem is still present. If it
   is not, activate the plugins one by one, meanwhile checking, after which plugin
   activation the problem appears again. 3) Contact us back with information about
   the results.
 *  Thread Starter [Website Rob](https://wordpress.org/support/users/website-rob/)
 * (@website-rob)
 * [3 years, 5 months ago](https://wordpress.org/support/topic/repeating-php-warning-cannot-modify-header-information/#post-16347007)
 * I took the easy route of using another plugin, which is not causing the notices.
   Although it is possible the errors were caused by another plugin or hacker code
   inserted into the form, I just don’t have time to spend on solving the problem.
   Sorry.
    -  This reply was modified 3 years, 5 months ago by [Website Rob](https://wordpress.org/support/users/website-rob/).

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

The topic ‘Repeating PHP Warning: Cannot modify header information’ is closed to
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 * ![](https://ps.w.org/contact-form-plugin/assets/icon-256x256.gif?rev=2565795)
 * [Contact Form by BestWebSoft - Advanced WP Contact Form Builder for WordPress](https://wordpress.org/plugins/contact-form-plugin/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/contact-form-plugin/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/contact-form-plugin/)
 * [Active Topics](https://wordpress.org/support/plugin/contact-form-plugin/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/contact-form-plugin/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/contact-form-plugin/reviews/)

 * 2 replies
 * 2 participants
 * Last reply from: [Website Rob](https://wordpress.org/support/users/website-rob/)
 * Last activity: [3 years, 5 months ago](https://wordpress.org/support/topic/repeating-php-warning-cannot-modify-header-information/#post-16347007)
 * Status: resolved