Title: Error message when updating posts
Last modified: August 18, 2016

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# Error message when updating posts

 *  [billdennis5](https://wordpress.org/support/users/billdennis5/)
 * (@billdennis5)
 * [19 years, 1 month ago](https://wordpress.org/support/topic/error-message-when-updating-posts/)
 * When I go back and make an editing change to an old post, I get the following
   error message:
 * Warning: in_array() [function.in-array]: Wrong datatype for second argument in/
   home/peoriapu/public_html/blogpeoria/wp-content/plugins/redirect-old-slugs.php
   on line 79
 * Warning: Cannot modify header information – headers already sent by (output started
   at /home/peoriapu/public_html/blogpeoria/wp-content/plugins/redirect-old-slugs.
   php:79) in /home/peoriapu/public_html/blogpeoria/wp-includes/pluggable-functions.
   php on line 272
 * When I check the post, the changes appear. So no harm, no foul. But this error
   message disturbs me. An idea what’s causing it, as I don’t want to do away with
   the “redirect old slugs” plugin.

Viewing 1 replies (of 1 total)

 *  [drmike](https://wordpress.org/support/users/drmike/)
 * (@drmike)
 * [19 years, 1 month ago](https://wordpress.org/support/topic/error-message-when-updating-posts/#post-557483)
 * Have you tried to contact the plugin designer? They may have already noted the
   error and worked out a fix.

Viewing 1 replies (of 1 total)

The topic ‘Error message when updating posts’ is closed to new replies.

## Tags

 * [posts](https://wordpress.org/support/topic-tag/posts/)
 * [slugs](https://wordpress.org/support/topic-tag/slugs/)

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 1 reply
 * 2 participants
 * Last reply from: [drmike](https://wordpress.org/support/users/drmike/)
 * Last activity: [19 years, 1 month ago](https://wordpress.org/support/topic/error-message-when-updating-posts/#post-557483)
 * Status: not resolved

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