Title: Warning: Undefined array key “siblings” …
Last modified: September 5, 2022

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# Warning: Undefined array key “siblings” …

 *  Resolved [tomtomb](https://wordpress.org/support/users/tomtomb/)
 * (@tomtomb)
 * [3 years, 9 months ago](https://wordpress.org/support/topic/warning-undefined-array-key-siblings/)
 * After an update to PHP 8 I get an error message on all pages that use the CC 
   Child Pages Plugin.
 * Warning: Undefined array key “siblings” in /var/www/web291/html/wp-elch/wp-content/
   plugins/cc-child-pages/includes/ccchildpages_widget.php on line 220
 * [https://elch-urlaub.de/schweden/unterkunft/ferienhaus/](https://elch-urlaub.de/schweden/unterkunft/ferienhaus/)
 * See at the end of the page.
 * What can I do to resolve this? Thx in advance.
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fwarning-undefined-array-key-siblings%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

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

 *  Plugin Author [caterhamcomputing](https://wordpress.org/support/users/caterhamcomputing/)
 * (@caterhamcomputing)
 * [3 years, 7 months ago](https://wordpress.org/support/topic/warning-undefined-array-key-siblings/#post-16160540)
 * Hi.
 * I’ve been unable to recreate in my test environment – but believe that I have
   spotted what might be causing the error.
 * I will release a new maintenance version shortly which should fix this problem.
 * Sorry to only be picking this up now.
 *  Plugin Author [caterhamcomputing](https://wordpress.org/support/users/caterhamcomputing/)
 * (@caterhamcomputing)
 * [3 years, 7 months ago](https://wordpress.org/support/topic/warning-undefined-array-key-siblings/#post-16186894)
 * Hi.
 * I have made a small change to the widget code, so you should no longer get this
   error.

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

The topic ‘Warning: Undefined array key “siblings” …’ is closed to new replies.

 * ![](https://ps.w.org/cc-child-pages/assets/icon-256x256.png?rev=3451096)
 * [CC Child Pages](https://wordpress.org/plugins/cc-child-pages/)
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 * [Unresolved Topics](https://wordpress.org/support/plugin/cc-child-pages/unresolved/)
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 * 2 replies
 * 2 participants
 * Last reply from: [caterhamcomputing](https://wordpress.org/support/users/caterhamcomputing/)
 * Last activity: [3 years, 7 months ago](https://wordpress.org/support/topic/warning-undefined-array-key-siblings/#post-16186894)
 * Status: resolved