Title: CACHE_META_KEY undefined
Last modified: October 3, 2025

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# CACHE_META_KEY undefined

 *  Resolved [tomahlberg](https://wordpress.org/support/users/tomahlberg/)
 * (@tomahlberg)
 * [8 months, 1 week ago](https://wordpress.org/support/topic/cache_meta_key-undefined/)
 * I get this errormessage, when I try to make a new (a very small) table:
   Backend
   fatal error: PHP Fatal error: Uncaught Error: Undefined class constant ‘CACHE_META_KEY’
   in /var/www/soendagaften.dk/public_html/wp-content/plugins/tablepress/models/
   model-table.php:632\nStack trace:\n#0 /var/www/soendagaften.dk/public_html/wp-
   content/plugins/tablepress/models/model-table.php(332): TablePress_Table_Model-
   >_flush_caching_plugins_caches()\n#1 /var/www/soendagaften.dk/public_html/wp-
   content/plugins/tablepress/controllers/controller-admin_ajax.php(130): TablePress_Table_Model-
   >save(Array)\n#2 /var/www/soendagaften.dk/public_html/wp-includes/class-wp-hook.
   php(324): TablePress_Admin_AJAX_Controller->ajax_action_save_table(”)\n#3 /var/
   www/soendagaften.dk/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->
   apply_filters(”, Array)\n#4 /var/www/soendagaften.dk/public_html/wp-includes/
   plugin.php(517): WP_Hook->do_action(Array)\n#5 /var/www/soendagaften.dk/public_html/
   wp-admin/admin-ajax.php(192): do_action(‘wp_ajax_tablepr…’)\n#6 {main}\n thrown
   in /var/www/soendagaften.dk/public_html/wp-content/plugins/tablepress/models/
   model-table.php on line 632\n
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fcache_meta_key-undefined%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 5 replies - 1 through 5 (of 5 total)

 *  Plugin Author [Tobias Bäthge](https://wordpress.org/support/users/tobiasbg/)
 * (@tobiasbg)
 * [8 months, 1 week ago](https://wordpress.org/support/topic/cache_meta_key-undefined/#post-18666694)
 * Hi [@tomahlberg](https://wordpress.org/support/users/tomahlberg/),
 * Thanks for your post and sorry for the trouble!
 * Ok, this indicates a problem with Elementor, or maybe the version.
 * Can you please check if you are using the latest version of the Elementor page
   builder plugin?
 * Regards,
   Tobias
 *  Thread Starter [tomahlberg](https://wordpress.org/support/users/tomahlberg/)
 * (@tomahlberg)
 * [8 months, 1 week ago](https://wordpress.org/support/topic/cache_meta_key-undefined/#post-18666730)
 * Fantastic!
   I deactivated Elementor – and it works as always before.
 * The first time I had a problem like this.
 * Thanks.
 * Tom
 *  Plugin Author [Tobias Bäthge](https://wordpress.org/support/users/tobiasbg/)
 * (@tobiasbg)
 * [8 months, 1 week ago](https://wordpress.org/support/topic/cache_meta_key-undefined/#post-18666883)
 * Hi [@tomahlberg](https://wordpress.org/support/users/tomahlberg/),
 * Thanks for confirming that this is related to Elementor (the cause for this is
   some change in the latest version of TablePress then).
 * To allow me to investigate this further, can you please let me know which version
   of the Elementor plugin is installed on your site?
 * Regards,
   Tobias
 *  Thread Starter [tomahlberg](https://wordpress.org/support/users/tomahlberg/)
 * (@tomahlberg)
 * [8 months, 1 week ago](https://wordpress.org/support/topic/cache_meta_key-undefined/#post-18666888)
 * Elementor Version 3.15.3
   Elementor Pro Version 3.6.2
 *  Plugin Author [Tobias Bäthge](https://wordpress.org/support/users/tobiasbg/)
 * (@tobiasbg)
 * [8 months, 1 week ago](https://wordpress.org/support/topic/cache_meta_key-undefined/#post-18666909)
 * Hi,
 * thanks a lot! That makes sense then, as this is an older version, which is not
   properly handled in TablePress, as it looks like.
 * Thanks for letting me know about this! I will integrate a fix into TablePress,
   to prevent this error in the future!
 * Best wishes,
   Tobias

Viewing 5 replies - 1 through 5 (of 5 total)

The topic ‘CACHE_META_KEY undefined’ is closed to new replies.

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 * 5 replies
 * 2 participants
 * Last reply from: [Tobias Bäthge](https://wordpress.org/support/users/tobiasbg/)
 * Last activity: [8 months, 1 week ago](https://wordpress.org/support/topic/cache_meta_key-undefined/#post-18666909)
 * Status: resolved