Title: Cannot modify header information
Last modified: March 17, 2020

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# Cannot modify header information

 *  Resolved [yfain](https://wordpress.org/support/users/yfain/)
 * (@yfain)
 * [6 years, 2 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-159/)
 * Hello,
 * we have the following error when creating a new job.
 *     ```
       Warning: Invalid argument supplied for foreach() in /homepages/1/d551067152/htdocs/xxx/wordpress/wp-content/plugins/simple-job-board/admin/meta-boxes/class-simple-job-board-meta-box-job-features.php on line 158
   
       Warning: Cannot modify header information - headers already sent by (output started at /homepages/1/d551067152/htdocs/xxx/wordpress/wp-content/plugins/simple-job-board/admin/meta-boxes/class-simple-job-board-meta-box-job-features.php:158) in /homepages/1/d551067152/htdocs/xxx/wordpress/wp-admin/post.php on line 222
   
       Warning: Cannot modify header information - headers already sent by (output started at /homepages/1/d551067152/htdocs/xxx/wordpress/wp-content/plugins/simple-job-board/admin/meta-boxes/class-simple-job-board-meta-box-job-features.php:158) in /homepages/1/d551067152/htdocs/xxx/wordpress/wp-includes/pluggable.php on line 1251
   
       Warning: Cannot modify header information - headers already sent by (output started at /homepages/1/d551067152/htdocs/xxx/wordpress/wp-content/plugins/simple-job-board/admin/meta-boxes/class-simple-job-board-meta-box-job-features.php:158) in /homepages/1/d551067152/htdocs/xxx/wordpress/wp-includes/pluggable.php on line 1254
       ```
   
 * On other sites it is running. I’ve disabled all plugins but not the plugin “Classic
   Editor”. When the plugin “Classic Editor” is disabled it is working.
 * Wordpress-Version: On all versions
    Simple Job Manager: 2.7.2, 2.7.4 Classic 
   Editor: 1.5
 * Some suggestions?

Viewing 1 replies (of 1 total)

 *  [Zubair Ahmad](https://wordpress.org/support/users/jerrykza/)
 * (@jerrykza)
 * [6 years, 2 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-159/#post-12552310)
 * Hi,
 * Please be assured that our plugin is working completely fine. We would recommend
   that you reach out to the Classic Editor plugin support to look into this issue
   for you.
 * Regards,

Viewing 1 replies (of 1 total)

The topic ‘Cannot modify header information’ is closed to new replies.

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 * 1 reply
 * 2 participants
 * Last reply from: [Zubair Ahmad](https://wordpress.org/support/users/jerrykza/)
 * Last activity: [6 years, 2 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-159/#post-12552310)
 * Status: resolved