Title: Uncaught Error: IntegrationInterface
Last modified: November 19, 2024

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# Uncaught Error: IntegrationInterface

 *  Resolved [own3mall](https://wordpress.org/support/users/own3mall/)
 * (@own3mall)
 * [1 year, 6 months ago](https://wordpress.org/support/topic/uncaught-error-integrationinterface/)
 * I upgraded from version 1.3.6 to 1.8.4, and now I get this error:
 * `[19-Nov-2024 19:56:57 UTC] PHP Fatal error: Uncaught Error: Interface 'Automattic\
   WooCommerce\Blocks\Integrations\IntegrationInterface' not found in /var/www/vhosts/
   mydomain_ftp/mydomain.com/httpdocs/wp-content/plugins/wt-smart-coupons-for-woocommerce/
   blocks/includes/class-wt-sc-blocks-integration.php:10
   Stack trace: 0 /var/www/
   vhosts/mydomain_ftp/mydomain.com/httpdocs/wp-content/plugins/wt-smart-coupons-
   for-woocommerce/blocks/wt-sc-blocks.php(70): include_once() 1 /var/www/vhosts/
   mydomain_ftp/mydomain.com/httpdocs/wp-includes/class-wp-hook.php(292): Wt_Sc_Free_Blocks-
   >init() 2 /var/www/vhosts/mydomain_ftp/mydomain.com/httpdocs/wp-includes/class-
   wp-hook.php(316): WP_Hook->apply_filters() 3 /var/www/vhosts/mydomain_ftp/mydomain.
   com/httpdocs/wp-includes/plugin.php(484): WP_Hook->do_action() 4 /var/www/vhosts/
   mydomain_ftp/mydomain.com/httpdocs/wp-content/plugins/woocommerce/packages/woocommerce-
   blocks/src/Domain/Bootstrap.php(64): do_action() 5 /var/www/vhosts/mydomain_ftp/
   mydomain.com/httpdocs/wp-content/plugins/woocommerce/packages/woocommerce-blocks/
   src/Package.php(122): Automattic\WooCo in /var/www/vhosts/mydomain_ftp/mydomain.
   com/httpdocs/wp-content/plugins/wt-smart-coupons-for-woocommerce/blocks/includes/
   class-wt-sc-blocks-integration.php on line 10
 * Any idea?

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Plugin Support [WebToffee Support](https://wordpress.org/support/users/webtoffeesupport/)
 * (@webtoffeesupport)
 * [1 year, 6 months ago](https://wordpress.org/support/topic/uncaught-error-integrationinterface/#post-18151023)
 * Hi [@own3mall](https://wordpress.org/support/users/own3mall/) ,
 * Greetings from WebToffee Support!
 * Thank you for reaching out to us regarding the fatal error you’ve encountered.
   Upon reviewing the error message you shared, it appears that the issue is caused
   by using an outdated version of WooCommerce. Specifically, this error can occur
   if your WooCommerce version is below 5.0.0 and has not been updated.
 * To resolve the issue, we recommend updating WooCommerce to its latest release
   and checking if the error persists after updating.
 * It’s always advisable to keep your plugins, WordPress, and WooCommerce up-to-
   date to ensure compatibility and optimal performance.
 * If you continue to experience any issues after updating, please let us know. 
   We’ll be happy to assist further!
 *  Thread Starter [own3mall](https://wordpress.org/support/users/own3mall/)
 * (@own3mall)
 * [1 year, 6 months ago](https://wordpress.org/support/topic/uncaught-error-integrationinterface/#post-18152833)
 * We’re using WooCommerce Version 5.1.0
 * We’re unable to update to a newer version due to customizations we’ve made. It
   might be best to check for the presence of this interface before registering 
   the blocks hook. Commenting it out fixes it for us, but there should be a check…
 *  Plugin Support [WebToffee Support](https://wordpress.org/support/users/webtoffeesupport/)
 * (@webtoffeesupport)
 * [1 year, 6 months ago](https://wordpress.org/support/topic/uncaught-error-integrationinterface/#post-18164168)
 * Hi [@own3mall](https://wordpress.org/support/users/own3mall/),
 * We understand your inability to update the WooCommerce plugin due to the customizations.
   To address this issue, we will include proper validations in the upcoming updates.
 * We appreciate the time and effort you took to bring this to our attention.

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Uncaught Error: IntegrationInterface’ is closed to new replies.

 * ![](https://ps.w.org/wt-smart-coupons-for-woocommerce/assets/icon-128x128.gif?
   rev=3248429)
 * [Smart Coupons For WooCommerce Coupons](https://wordpress.org/plugins/wt-smart-coupons-for-woocommerce/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/wt-smart-coupons-for-woocommerce/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/wt-smart-coupons-for-woocommerce/)
 * [Active Topics](https://wordpress.org/support/plugin/wt-smart-coupons-for-woocommerce/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/wt-smart-coupons-for-woocommerce/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/wt-smart-coupons-for-woocommerce/reviews/)

 * 3 replies
 * 2 participants
 * Last reply from: [WebToffee Support](https://wordpress.org/support/users/webtoffeesupport/)
 * Last activity: [1 year, 6 months ago](https://wordpress.org/support/topic/uncaught-error-integrationinterface/#post-18164168)
 * Status: resolved