Title: Warning : header error message
Last modified: June 1, 2022

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# Warning : header error message

 *  [Thomas](https://wordpress.org/support/users/thomhsb/)
 * (@thomhsb)
 * [4 years ago](https://wordpress.org/support/topic/warning-header-error-message/)
 * I have an error that I did not have before version 3.3.0.
    Since I installed 
   3.3.0 version, I get this warning in debug mode:
 * Warning: Header may not contain more than a single header, new line detected 
   in /home/bljf2949/gigaconcept.wireless-products.com/wp-includes/class-wp.php 
   on line 531
 * Thanks

Viewing 3 replies - 1 through 3 (of 3 total)

 *  [Shahin](https://wordpress.org/support/users/skalanter/)
 * (@skalanter)
 * [4 years ago](https://wordpress.org/support/topic/warning-header-error-message/#post-15700070)
 * Hello [@thomhsb](https://wordpress.org/support/users/thomhsb/),
 * The warning path is not from our products. It’s from the WordPress. However, 
   I use the latest version of the theme and plugins and WordPress, and I didn’t
   see that issue so that you can update all plugins and theme and WordPress.
 * Best Regards
 *  Thread Starter [Thomas](https://wordpress.org/support/users/thomhsb/)
 * (@thomhsb)
 * [4 years ago](https://wordpress.org/support/topic/warning-header-error-message/#post-15702608)
 * Okay, I’ll look into it further then, thanks.
 *  [Shahin](https://wordpress.org/support/users/skalanter/)
 * (@skalanter)
 * [4 years ago](https://wordpress.org/support/topic/warning-header-error-message/#post-15705005)
 * You’re welcome.

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Warning : header error message’ is closed to new replies.

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 * 3 replies
 * 2 participants
 * Last reply from: [Shahin](https://wordpress.org/support/users/skalanter/)
 * Last activity: [4 years ago](https://wordpress.org/support/topic/warning-header-error-message/#post-15705005)
 * Status: not resolved