Title: E_ERROR
Last modified: March 16, 2026

---

# E_ERROR

 *  Resolved [ktsinfo0076](https://wordpress.org/support/users/ktsinfo0076/)
 * (@ktsinfo0076)
 * [2 months, 3 weeks ago](https://wordpress.org/support/topic/e_error-40/)
 * The following error occurred in WordPress 6.9.4 and SlimStat Analytics 5.4.1.
   
   Updating to version 5.4.2 did not resolve the issue.
 *     ```wp-block-code
       エラー詳細===============エラータイプ E_ERROR が /wp-content/plugins/wp-slimstat/src/Helpers/DataBuckets.php ファイルの 118 行目で発生しました。 エラーメッセージ: Uncaught Error: Call to undefined function SlimStat\Helpers\jddayofweek() in /wp-content/plugins/wp-slimstat/src/Helpers/DataBuckets.php:118Stack trace:#0 /wp-content/plugins/wp-slimstat/src/Helpers/DataBuckets.php(73): SlimStat\Helpers\DataBuckets->initSeqWeek()#1 /wp-content/plugins/wp-slimstat/src/Helpers/DataBuckets.php(60): SlimStat\Helpers\DataBuckets->initBuckets()#2 /wp-content/plugins/wp-slimstat/src/Modules/Chart.php(525): SlimStat\Helpers\DataBuckets->__construct()#3 /wp-content/plugins/wp-slimstat/src/Modules/Chart.php(222): SlimStat\Modules\Chart->processResults()#4 /wp-content/plugins/wp-slimstat/src/Modules/Chart.php(123): SlimStat\Modules\Chart->fetchChartData()#5 /wp-content/plugins/wp-slimstat/src/Modules/Chart.php(38): SlimStat\Modules\Chart->init()#6 /wp-content/plugins/wp-slimstat/admin/view/wp-slimstat-reports.php(1492): SlimStat\Modules\Chart->showChart()#7 /wp-content/plugins/wp-slimstat/admin/view/wp-slimstat-reports.php(1078): wp_slimstat_reports::show_chart()#8 /wp-admin/includes/template.php(1453): wp_slimstat_reports::callback_wrapper()#9 /wp-admin/includes/dashboard.php(271): do_meta_boxes()#10 /wp-admin/index.php(204): wp_dashboard()#11 {main}  thrown
       ```
   

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

 *  Plugin Contributor [Parhum Khoshbakht](https://wordpress.org/support/users/parhumm/)
 * (@parhumm)
 * [2 months, 3 weeks ago](https://wordpress.org/support/topic/e_error-40/#post-18852860)
 * Hi [@ktsinfo0076](https://wordpress.org/support/users/ktsinfo0076/) ,
 * Thank you for the detailed error report — the stack trace made it very easy to
   confirm the issue.
 * This is a known bug on our side. The chart code was using a PHP function that
   requires the optional “calendar” extension, which is not available on all server
   environments. We’ve already fixed this in version 5.4.3, which is available now.**
   Please update SlimStat Analytics to 5.4.3** and the error will be resolved.
 * Please let us know if the issue persists after updating
 *  Thread Starter [ktsinfo0076](https://wordpress.org/support/users/ktsinfo0076/)
 * (@ktsinfo0076)
 * [2 months, 3 weeks ago](https://wordpress.org/support/topic/e_error-40/#post-18853553)
 * Thank you for your support.
   The error has been resolved.
 *  Plugin Contributor [Parhum Khoshbakht](https://wordpress.org/support/users/parhumm/)
 * (@parhumm)
 * [2 months, 3 weeks ago](https://wordpress.org/support/topic/e_error-40/#post-18854968)
 * Glad to hear the error is resolved! For the best experience, we recommend updating
   to the latest **version 5.4.4**, which includes additional stability improvements
   and bug fixes.
 * Thanks for reporting this — marking as resolved.
 *  Plugin Contributor [Parhum Khoshbakht](https://wordpress.org/support/users/parhumm/)
 * (@parhumm)
 * [2 months, 2 weeks ago](https://wordpress.org/support/topic/e_error-40/#post-18860371)
 * Hi [@ktsinfo0076](https://wordpress.org/support/users/ktsinfo0076/) ,
 * Just a quick heads-up — **we’ve released version 5.4.6.**
 * We heard from many users that upgrading to the 5.4.x series caused unexpected
   issues: visitor counts dropping to zero, IPs being masked without permission,
   and a consent banner showing up on sites that never enabled one. This release
   fixes all of that. After updating, your site should work the way it did before
   5.4.0 — no manual steps required.
 * If you’re using a caching plugin, please clear your cache after updating.
 * Once you’ve updated, visit a few pages on your site and check the Access Log 
   to confirm new data is being recorded. If anything looks off, we’re here to help.

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

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 * 5 replies
 * 2 participants
 * Last reply from: [Parhum Khoshbakht](https://wordpress.org/support/users/parhumm/)
 * Last activity: [2 months, 2 weeks ago](https://wordpress.org/support/topic/e_error-40/#post-18860371)
 * Status: resolved