Title: E_ERROR
Last modified: July 1, 2020

---

# E_ERROR

 *  Resolved [Shrik](https://wordpress.org/support/users/saowp/)
 * (@saowp)
 * [5 years, 11 months ago](https://wordpress.org/support/topic/e_error-8/)
 * When seeking help with this issue, you may be asked for some of the following
   information:
    WordPress version 5.4.2 Current theme: Kallyas Child Theme (version
   4.0.0) Current plugin: Matomo Analytics – Ethical Stats. Powerful Insights. (
   version 1.1.2) PHP version 7.4.7
 * Error Details
    ============= An error of type E_ERROR was caused in line 37 of
   the file /home/my_site/public_html/wp-content/plugins/matomo/app/vendor/php-di/
   php-di/src/DI/Definition/Helper/ArrayDefinitionExtensionHelper.php. Error message:
   Uncaught Error: Class ‘DI\Definition\ArrayDefinitionExtension’ not found in /
   home/my_site/public_html/wp-content/plugins/matomo/app/vendor/php-di/php-di/src/
   DI/Definition/Helper/ArrayDefinitionExtensionHelper.php:37 Stack trace: #0 /home/
   my_site/public_html/wp-content/plugins/matomo/app/vendor/php-di/php-di/src/DI/
   Definition/Source/DefinitionArray.php(121): DI\Definition\Helper\ArrayDefinitionExtensionHelper-
   >getDefinition(‘observers.globa…’) #1 /home/my_site/public_html/wp-content/plugins/
   matomo/app/vendor/php-di/php-di/src/DI/Definition/Source/DefinitionArray.php(
   76): DI\Definition\Source\DefinitionArray->castDefinition(Object(DI\Definition\
   Helper\ArrayDefinitionExtensionHelper), ‘observers.globa…’) #2 /home/my_site/
   public_html/wp-content/plugins/matomo/app/vendor/php-di/php-di/src/DI/Definition/
   Source/DefinitionFile.php(43): DI\Definition\Source\DefinitionArray->getDefinition(‘
   observers.globa…’) #3 /home/my_site/public_html/wp-content/plugins/matomo/app/
   vendor/php-di/php-di/src/DI/Definition/Sou

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

 *  Plugin Author [Thomas](https://wordpress.org/support/users/tsteur/)
 * (@tsteur)
 * [5 years, 11 months ago](https://wordpress.org/support/topic/e_error-8/#post-13056935)
 * Hi [@saowp](https://wordpress.org/support/users/saowp/) thanks for creating the
   issue and letting us know. Sounds like maybe some incompatibility with some other
   plugin. Could you send us your system report? See [https://matomo.org/faq/wordpress/how-do-i-find-and-copy-the-system-report-in-matomo-for-wordpress/](https://matomo.org/faq/wordpress/how-do-i-find-and-copy-the-system-report-in-matomo-for-wordpress/)
 * Either as a comment here (it should be anonymised) or you can also send it by
   mail to wordpress at matomo.org
 *  Thread Starter [Shrik](https://wordpress.org/support/users/saowp/)
 * (@saowp)
 * [5 years, 11 months ago](https://wordpress.org/support/topic/e_error-8/#post-13057041)
 * Thank you for your quick response. Subsequently, I have noticed the same error
   with other plugins too. Looks like my problem lies elsewhere. Marking this as
   resolved for now since it is not Matomo-specific.

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

The topic ‘E_ERROR’ is closed to new replies.

 * ![](https://ps.w.org/matomo/assets/icon-256x256.png?rev=3531741)
 * [Matomo Analytics - Powerful, Privacy-First Insights for WordPress](https://wordpress.org/plugins/matomo/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/matomo/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/matomo/)
 * [Active Topics](https://wordpress.org/support/plugin/matomo/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/matomo/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/matomo/reviews/)

 * 2 replies
 * 2 participants
 * Last reply from: [Shrik](https://wordpress.org/support/users/saowp/)
 * Last activity: [5 years, 11 months ago](https://wordpress.org/support/topic/e_error-8/#post-13057041)
 * Status: resolved