Title: PHP Deprecated error
Last modified: July 6, 2025

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# PHP Deprecated error

 *  Resolved [bergholt](https://wordpress.org/support/users/bergholt/)
 * (@bergholt)
 * [10 months, 3 weeks ago](https://wordpress.org/support/topic/php-deprecated-error-24/)
 * Hello there,
 * Starting on July 6th, I’ve been seeing the following error message at the top
   of the Matomo interface in WordPress.
    - WordPress: 6.8.1
    - Matomo plugin: 5.3.1
    - PHP: 8.4
 * This is all running on a standard cPanel hosting plan.
 * The plugin still appears to be fully functional — I just thought I’d share in
   case it’s helpful.
 *     ```wp-block-code
       [06-Jul-2025 16:13:19 UTC] PHP Deprecated:  Piwik\Plugins\UsersManager\API::executeConcurrencySafe(): Implicitly marking parameter $callback as nullable is deprecated, the explicit nullable type must be used instead in /home/xxxx/yyyy.zz/wp-content/plugins/matomo/app/plugins/UsersManager/API.php on line 1320.
       ```
   
    -  This topic was modified 10 months, 3 weeks ago by [bergholt](https://wordpress.org/support/users/bergholt/).

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

 *  Plugin Support [dizzyatinnocraft](https://wordpress.org/support/users/dizzyatinnocraft/)
 * (@dizzyatinnocraft)
 * [10 months, 3 weeks ago](https://wordpress.org/support/topic/php-deprecated-error-24/#post-18543465)
 * That is a developer specific & php version dependent message, it shouldn’t be
   displayed on a live website. Make sure in your php.ini that deprecation notices
   are not displayed by setting `error_reporting` to, for example, `E_ALL & ~E_NOTICE&
   ~E_WARNING & ~E_DEPRECATED`.
 *  Plugin Support [dizzyatinnocraft](https://wordpress.org/support/users/dizzyatinnocraft/)
 * (@dizzyatinnocraft)
 * [10 months, 2 weeks ago](https://wordpress.org/support/topic/php-deprecated-error-24/#post-18556793)
 * Marking as resolved due to a lack of response. If there is still an issue, feel
   free to comment or create a new issue.

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

The topic ‘PHP Deprecated error’ is closed to new replies.

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 * 2 replies
 * 2 participants
 * Last reply from: [dizzyatinnocraft](https://wordpress.org/support/users/dizzyatinnocraft/)
 * Last activity: [10 months, 2 weeks ago](https://wordpress.org/support/topic/php-deprecated-error-24/#post-18556793)
 * Status: resolved