Title: Critical Error Last modified: July 31, 2020 --- # Critical Error * Resolved [ncbryant24](https://wordpress.org/support/users/ncbryant24/) * (@ncbryant24) * [5 years, 9 months ago](https://wordpress.org/support/topic/critical-error-94/) * I am getting a critical error on my website. After days of thinking it was to do with the Brizy plugin I finally got the email with error details from wordpress which said it was the Printful Integration for WooCommerce Plugin. Below are the details from that email. How do I correct this while still using printful. Is there somewhere I can download an older version of the plugin? * When seeking help with this issue, you may be asked for some of the following information: WordPress version 5.4.2 Current theme: The Core Child (version 1.0) Current plugin: Printful Integration for WooCommerce (version 2.1.13) PHP version 7.3.20 * Error Details ============= An error of type E_ERROR was caused in line 6 of the file /home1/parttit1/public_html/wp-content/plugins/printful-shipping-for- woocommerce/includes/class-printful-rest-api-controller.php. Error message: Uncaught Error: Class ‘WC_REST_Controller’ not found in /home1/parttit1/public_html/wp- content/plugins/printful-shipping-for-woocommerce/includes/class-printful-rest- api-controller.php:6 Stack trace: #0 /home1/parttit1/public_html/wp-content/plugins/ printful-shipping-for-woocommerce/printful-shipping.php(133): require_once() # 1 /home1/parttit1/public_html/wp-includes/class-wp-hook.php(287): Printful_Base- >register_rest_routes(Object(WP_REST_Server)) #2 /home1/parttit1/public_html/ wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array) #3 /home1/ parttit1/public_html/wp-includes/plugin.php(478): WP_Hook->do_action(Array) # 4 /home1/parttit1/public_html/wp-includes/rest-api.php(479): do_action(‘rest_api_init’, Object(WP_REST_Server)) #5 /home1/parttit1/public_html/wp-includes/rest-api.php( 437): rest_get_server() #6 /home1/parttit1/public_html/wp-includes/rest-api.php( 1558): rest_do_request(Object(WP_REST_Request)) #7 [internal function]: rest_preload_api_request( Array, ‘/google-site-ki…’) #8 /ho Viewing 4 replies - 1 through 4 (of 4 total) * [vita.printful](https://wordpress.org/support/users/everybear/) * (@everybear) * [5 years, 9 months ago](https://wordpress.org/support/topic/critical-error-94/#post-13195289) * Hey there, * Thank you for reaching out with this concern! Could you try re-activating the Printful plugin to see if this helps with solving this issue? * Our plugin is compatible with the newest WordPress and WooCommerce versions, however it might encounter compatibility issues with any other third party plugins. * We hope this helps! * Thread Starter [ncbryant24](https://wordpress.org/support/users/ncbryant24/) * (@ncbryant24) * [5 years, 9 months ago](https://wordpress.org/support/topic/critical-error-94/#post-13195355) * I tried reactivating and it didn’t help. * [vita.printful](https://wordpress.org/support/users/everybear/) * (@everybear) * [5 years, 9 months ago](https://wordpress.org/support/topic/critical-error-94/#post-13195411) * Thank you for your prompt reply! We’re currently consulting with our developer team on the error you’re receiving, to see if there is anything else we could suggest from our end. * **I’ll follow up with you as soon as we have any additional details on this.** * Another thing you could try meanwhile is to disable all other plugins apart from WooCommerce and Printful, to see if that helps with solving the error – this would indicate that there are compatibility issues between our plugin and one of your other plugins. * Let us know how that goes! * [vita.printful](https://wordpress.org/support/users/everybear/) * (@everybear) * [5 years, 9 months ago](https://wordpress.org/support/topic/critical-error-94/#post-13195851) * Hey there, * Could you reach out to us at [feedback@printful.com](https://wordpress.org/support/topic/critical-error-94/feedback@printful.com?output_format=md) with your store details and Printful Account email? We’ll want to check in with your specific store to see if we can solve the issue from our end! Viewing 4 replies - 1 through 4 (of 4 total) The topic ‘Critical Error’ is closed to new replies. * ![](https://ps.w.org/printful-shipping-for-woocommerce/assets/icon-256x256.png? rev=1067891) * [Printful Integration for WooCommerce](https://wordpress.org/plugins/printful-shipping-for-woocommerce/) * [Frequently Asked Questions](https://wordpress.org/plugins/printful-shipping-for-woocommerce/#faq) * [Support Threads](https://wordpress.org/support/plugin/printful-shipping-for-woocommerce/) * [Active Topics](https://wordpress.org/support/plugin/printful-shipping-for-woocommerce/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/printful-shipping-for-woocommerce/unresolved/) * [Reviews](https://wordpress.org/support/plugin/printful-shipping-for-woocommerce/reviews/) ## Tags * [critical error](https://wordpress.org/support/topic-tag/critical-error/) * [printful](https://wordpress.org/support/topic-tag/printful/) * 4 replies * 2 participants * Last reply from: [vita.printful](https://wordpress.org/support/users/everybear/) * Last activity: [5 years, 9 months ago](https://wordpress.org/support/topic/critical-error-94/#post-13195851) * Status: resolved