Title: Undefined array key “delete”
Last modified: November 9, 2022

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# Undefined array key “delete”

 *  Resolved [Darko G.](https://wordpress.org/support/users/darkog/)
 * (@darkog)
 * [3 years, 7 months ago](https://wordpress.org/support/topic/undefined-array-key-delete/)
 * We see this error in the error logs. Would be great if you can fix it.
 * Screenshot
    [https://prnt.sc/B5nH4IR2QD0w](https://prnt.sc/B5nH4IR2QD0w)

Viewing 7 replies - 1 through 7 (of 7 total)

 *  Plugin Author [Rolf Allard van Hagen](https://wordpress.org/support/users/ravanh/)
 * (@ravanh)
 * [3 years, 7 months ago](https://wordpress.org/support/topic/undefined-array-key-delete/#post-16181695)
 * Hi, which object cache plugin are you using?
 *  Plugin Author [Rolf Allard van Hagen](https://wordpress.org/support/users/ravanh/)
 * (@ravanh)
 * [3 years, 7 months ago](https://wordpress.org/support/topic/undefined-array-key-delete/#post-16181820)
 * … because that is where the warning is coming from.
 *  Thread Starter [Darko G.](https://wordpress.org/support/users/darkog/)
 * (@darkog)
 * [3 years, 7 months ago](https://wordpress.org/support/topic/undefined-array-key-delete/#post-16182160)
 * Hey,
 * It’s WPEngine – same warning on multiple sites. I will see if i can find anything
   in object-cache.php
 * Best Regards,
    Darko
 *  Plugin Author [Rolf Allard van Hagen](https://wordpress.org/support/users/ravanh/)
 * (@ravanh)
 * [3 years, 7 months ago](https://wordpress.org/support/topic/undefined-array-key-delete/#post-16182227)
 * When do you get the error exactly? Maybe test again after turning the WPEngine
   object cache off, temporarily…
 *  Plugin Author [Rolf Allard van Hagen](https://wordpress.org/support/users/ravanh/)
 * (@ravanh)
 * [3 years, 7 months ago](https://wordpress.org/support/topic/undefined-array-key-delete/#post-16183410)
 * Or you can try the development version [https://downloads.wordpress.org/plugin/xml-sitemap-feed.zip](https://downloads.wordpress.org/plugin/xml-sitemap-feed.zip)
   🙂 Let me know!
 *  Thread Starter [Darko G.](https://wordpress.org/support/users/darkog/)
 * (@darkog)
 * [3 years, 7 months ago](https://wordpress.org/support/topic/undefined-array-key-delete/#post-16183435)
 * [@ravanh](https://wordpress.org/support/users/ravanh/) – thank you! The issue
   is resolved in the development version. Good job!
 *  Plugin Author [Rolf Allard van Hagen](https://wordpress.org/support/users/ravanh/)
 * (@ravanh)
 * [3 years, 7 months ago](https://wordpress.org/support/topic/undefined-array-key-delete/#post-16183527)
 * Haha, no the original issue is not resolved, it just does not occur anymore. 
   The dev version does not use transients in the same way. I suspect the WPengine
   object cache plugin will still throw a similar error under similar circumstances(
   when a transient is deleted).
 * Anyway, happy to hear my plugin is not involved anymore! 😉

Viewing 7 replies - 1 through 7 (of 7 total)

The topic ‘Undefined array key “delete”’ is closed to new replies.

 * ![](https://ps.w.org/xml-sitemap-feed/assets/icon-128x128.png?rev=1112143)
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 * 7 replies
 * 2 participants
 * Last reply from: [Rolf Allard van Hagen](https://wordpress.org/support/users/ravanh/)
 * Last activity: [3 years, 7 months ago](https://wordpress.org/support/topic/undefined-array-key-delete/#post-16183527)
 * Status: resolved