Title: WordPress update = Warning: array_intersect_key
Last modified: December 9, 2020

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# WordPress update = Warning: array_intersect_key

 *  Resolved [Littlemailman](https://wordpress.org/support/users/littlemailman/)
 * (@littlemailman)
 * [5 years, 5 months ago](https://wordpress.org/support/topic/wordpress-update-warning-array_intersect_key/)
 * After updating I get this backend message when logged in. Everything else seems
   fine, but this is caused by the MonsterInsights-plugin and goes away when deactivated.
   I’ve tried to delete the plugin and reinstall it, but no luck.
 * ”
    Warning: array_intersect_key() [function.array-intersect-key]: Expected parameter
   1 to be an array, string given in /var/www/EXAMPLE.COM/public_html/wp-includes/
   rest-api/class-wp-rest-server.php on line 1402
 * Warning: Cannot modify header information – headers already sent by (output started
   at /var/www/EXAMPLE.COM/public_html/wp-includes/rest-api/class-wp-rest-server.
   php:1402) in /var/www/EXAMPLE.COM/public_html/wp-admin/admin-header.php on line
   9
    ”
 * What is this and how do I get it fixed ?

Viewing 4 replies - 1 through 4 (of 4 total)

 *  Plugin Support [Michelle D.](https://wordpress.org/support/users/devmich/)
 * (@devmich)
 * [5 years, 5 months ago](https://wordpress.org/support/topic/wordpress-update-warning-array_intersect_key/#post-13767950)
 * Hey, thanks for reaching out to us about this.
 * I’ve forwarded this to our developers, but could you also reach out to us at 
   [https://www.monsterinsights.com/lite-support/](https://www.monsterinsights.com/lite-support/)
   about this? We’ll reply there as soon as we’re able to.
 * Thanks!
 *  [seanesome](https://wordpress.org/support/users/seanesome/)
 * (@seanesome)
 * [5 years, 5 months ago](https://wordpress.org/support/topic/wordpress-update-warning-array_intersect_key/#post-13768827)
 * have the same issue
 *  [Christoph Daum](https://wordpress.org/support/users/apermo/)
 * (@apermo)
 * [5 years, 5 months ago](https://wordpress.org/support/topic/wordpress-update-warning-array_intersect_key/#post-13771004)
 * [https://core.trac.wordpress.org/ticket/51986](https://core.trac.wordpress.org/ticket/51986)
 * There is a known issue.
 *  Plugin Support [Michelle D.](https://wordpress.org/support/users/devmich/)
 * (@devmich)
 * [5 years, 5 months ago](https://wordpress.org/support/topic/wordpress-update-warning-array_intersect_key/#post-13774139)
 * Hi there,
 * Our developers pushed out a fix in version 7.13.3. Please update the plugin 🙂
 * If there are any further issues please let us know at [https://www.monsterinsights.com/lite-support/](https://www.monsterinsights.com/lite-support/)
   and we’ll be happy to help.
 * Thanks everyone!
    -  This reply was modified 5 years, 5 months ago by [Michelle D.](https://wordpress.org/support/users/devmich/).

Viewing 4 replies - 1 through 4 (of 4 total)

The topic ‘WordPress update = Warning: array_intersect_key’ is closed to new replies.

 * ![](https://ps.w.org/google-analytics-for-wordpress/assets/icon.svg?rev=2976619)
 * [MonsterInsights - Google Analytics Dashboard for WordPress (Website Stats Made Easy)](https://wordpress.org/plugins/google-analytics-for-wordpress/)
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 * 4 replies
 * 4 participants
 * Last reply from: [Michelle D.](https://wordpress.org/support/users/devmich/)
 * Last activity: [5 years, 5 months ago](https://wordpress.org/support/topic/wordpress-update-warning-array_intersect_key/#post-13774139)
 * Status: resolved