Title: Undefined array key “security”
Last modified: May 14, 2025

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# Undefined array key “security”

 *  Resolved [akollbrunner](https://wordpress.org/support/users/akollbrunner/)
 * (@akollbrunner)
 * [1 year ago](https://wordpress.org/support/topic/undefined-array-key-security/)
 * Hello,
 * After updating my server to php8.2, and updating both wordpress and various plugins,
   i’m getting this error message when i try to user the plugin “Import and export
   users and customers” :
 *     ```wp-block-code
       Warning: Undefined array key "security" in /home/clients/996eb7eba1d1d317655889a1bbdd7066/vod/wp-content/plugins/import-users-from-csv-with-meta/classes/import.php on line 16Nonce check failed
       ```
   
 * Any idea? I tried to deactivate other plugins but nothing worked…I tried to change
   my theme (Divi) to a much basic one as well.

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

 *  Plugin Author [Javier Carazo](https://wordpress.org/support/users/carazo/)
 * (@carazo)
 * [1 year ago](https://wordpress.org/support/topic/undefined-array-key-security/#post-18464822)
 * Sorry I cannot reproduce it.
 * Could you tell me exactly what are you doing? Are you using last version?
 *  Thread Starter [akollbrunner](https://wordpress.org/support/users/akollbrunner/)
 * (@akollbrunner)
 * [1 year ago](https://wordpress.org/support/topic/undefined-array-key-security/#post-18466973)
 * Thanks for your reply
 * I’m clicking on the plugin in the tool menu.
 * ![](https://i0.wp.com/vod.ecolelasource.ch/wp-content/uploads/2025/05/error.png?
   ssl=1)
 * Yes i updated the plugin to the latest version.
    -  This reply was modified 1 year ago by [akollbrunner](https://wordpress.org/support/users/akollbrunner/).
    -  This reply was modified 1 year ago by [akollbrunner](https://wordpress.org/support/users/akollbrunner/).
 *  Thread Starter [akollbrunner](https://wordpress.org/support/users/akollbrunner/)
 * (@akollbrunner)
 * [1 year ago](https://wordpress.org/support/topic/undefined-array-key-security/#post-18467006)
 * I found the error…it was an error in the function.php
 *  Plugin Author [Javier Carazo](https://wordpress.org/support/users/carazo/)
 * (@carazo)
 * [1 year ago](https://wordpress.org/support/topic/undefined-array-key-security/#post-18467047)
 * In your functions.php? Take care about it. Thanks.

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

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

 * ![](https://ps.w.org/import-users-from-csv-with-meta/assets/icon-256x256.png?
   rev=1174343)
 * [Import and export users and customers](https://wordpress.org/plugins/import-users-from-csv-with-meta/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/import-users-from-csv-with-meta/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/import-users-from-csv-with-meta/)
 * [Active Topics](https://wordpress.org/support/plugin/import-users-from-csv-with-meta/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/import-users-from-csv-with-meta/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/import-users-from-csv-with-meta/reviews/)

 * 4 replies
 * 2 participants
 * Last reply from: [Javier Carazo](https://wordpress.org/support/users/carazo/)
 * Last activity: [1 year ago](https://wordpress.org/support/topic/undefined-array-key-security/#post-18467047)
 * Status: resolved