Title: Undefined array key “cache”
Last modified: February 5, 2025

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# Undefined array key “cache”

 *  Resolved [rbarron](https://wordpress.org/support/users/rbarron/)
 * (@rbarron)
 * [1 year, 4 months ago](https://wordpress.org/support/topic/undefined-array-key-cache/)
 * Any insights into a resolution for this Warning?
 * **Warning**: Undefined array key “cache” in **wp-content/plugins/wp-photo-album-
   plus/wppa-filter.php** on line **885**
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fundefined-array-key-cache%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Plugin Author [Jacob N. Breetvelt](https://wordpress.org/support/users/opajaap/)
 * (@opajaap)
 * [1 year, 4 months ago](https://wordpress.org/support/topic/undefined-array-key-cache/#post-18285677)
 * Yes, is a known issue. Does no harm, has been hotfixed.
    Download a fresh version
   of the plugin and install it
    -  This reply was modified 1 year, 4 months ago by [Jacob N. Breetvelt](https://wordpress.org/support/users/opajaap/).
 *  Thread Starter [rbarron](https://wordpress.org/support/users/rbarron/)
 * (@rbarron)
 * [1 year, 4 months ago](https://wordpress.org/support/topic/undefined-array-key-cache/#post-18287579)
 * Thank you, Jacob. Appreciate your contribution.
 *  Plugin Author [Jacob N. Breetvelt](https://wordpress.org/support/users/opajaap/)
 * (@opajaap)
 * [1 year, 4 months ago](https://wordpress.org/support/topic/undefined-array-key-cache/#post-18294637)
 * Also: Todays release version 9.0.02.001 fixes it. Just update the plugin.

Viewing 3 replies - 1 through 3 (of 3 total)

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

 * ![](https://s.w.org/plugins/geopattern-icon/wp-photo-album-plus.svg)
 * [WP Photo Album Plus](https://wordpress.org/plugins/wp-photo-album-plus/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/wp-photo-album-plus/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/wp-photo-album-plus/)
 * [Active Topics](https://wordpress.org/support/plugin/wp-photo-album-plus/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/wp-photo-album-plus/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/wp-photo-album-plus/reviews/)

## Tags

 * [array key](https://wordpress.org/support/topic-tag/array-key/)
 * [undefined](https://wordpress.org/support/topic-tag/undefined/)

 * 3 replies
 * 2 participants
 * Last reply from: [Jacob N. Breetvelt](https://wordpress.org/support/users/opajaap/)
 * Last activity: [1 year, 4 months ago](https://wordpress.org/support/topic/undefined-array-key-cache/#post-18294637)
 * Status: resolved