Title: Update Error
Last modified: June 15, 2026

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# Update Error

 *  Resolved [bluesapphiremedia](https://wordpress.org/support/users/bluesapphiremedia/)
 * (@bluesapphiremedia)
 * [2 weeks, 2 days ago](https://wordpress.org/support/topic/update-error-136/)
 * Updated this plugin, which caused site to crash. Deactivated and reactivated,
   rolled back, and limiting access to other plugins on the Dashboard such as Wordfence
   settings. Deactivated until the error was fixed but nothing in the changeling
   for 2 weeks.
 * If I now try to update I received “Update failed: There has been a critical error
   on this website. Please check your site admin email inbox for instructions. If
   you continue to have problems, please try the support forums.Learn more about
   troubleshooting WordPress.”
 * Have rolled back WordPress and PHP to try and resolve and still nothing has worked.
 * WordPress version 7.0
   Active theme: OceanWP (version 4.1.6)Current plugin: PPOM
   for WooCommerce (version 34.0.1)PHP version 8.5.6

Viewing 5 replies - 1 through 5 (of 5 total)

 *  Plugin Support [rodicaelena](https://wordpress.org/support/users/rodicaelena/)
 * (@rodicaelena)
 * [2 weeks, 1 day ago](https://wordpress.org/support/topic/update-error-136/#post-18939057)
 * Hi,
 * Thank you for writing! I am so sorry for the stress and frustration this crash
   has caused.
 * When WordPress throws that “critical error” screen, it automatically sends an
   automated email to your site’s admin email address containing the technical details.
 * **Could you please check your inbox (and spam folder) for that email and reply
   to us with the exact error details listed there?**
 * We are looking for the lines that mention a **“Fatal Error”**—it usually points
   to a specific file path and line number (e.g., `Fatal error: Uncaught Error...
   in /wp-content/plugins/... on line X`).
 * If you didn’t receive the email, here is how to find the error:
    1. **Check your server logs:** Log into your hosting account or access your site
       via FTP, and look for a file named `error_log` or `debug.log` inside your root
       directory or `/wp-content/` folder. Paste the most recent lines here.
    2. **Enable WP Debug:** If no logs exist, open your `wp-config.php` file, change`
       define('WP_DEBUG', false);` to `true`, and add `define('WP_DEBUG_LOG', true);`
       right below it. Trigger the error once more, and it will write the exact conflict
       to a `debug.log` file in your `/wp-content/` folder.
 * Once we have that exact fatal error text, we can trace exactly why PPOM is conflicting
   with your environment and get this resolved for you.
 * Kind regards!
 *  Thread Starter [bluesapphiremedia](https://wordpress.org/support/users/bluesapphiremedia/)
 * (@bluesapphiremedia)
 * [2 weeks, 1 day ago](https://wordpress.org/support/topic/update-error-136/#post-18939751)
 *     ```wp-block-code
       Error Details=============An error of type E_ERROR was caused in line 1400 of the file /customers/a/e/2/CLIENTS-URL/httpd.www/wp-content/plugins/woocommerce-product-addon/src/Pricing/Engine.php. Error message: Uncaught Error: Class "PPOM\Pricing\WC_Tax" not found in /customers/a/e/2/CLIENTS-URL/httpd.www/wp-content/plugins/woocommerce-product-addon/src/Pricing/Engine.php:1400Stack trace:#0 /customers/a/e/2/CLIENTS-URL/httpd.www/wp-content/plugins/woocommerce-product-addon/inc/prices.php(64): PPOM\Pricing\Engine::price_cart_fee(Object(WC_Cart))#1 /customers/a/e/2/CLIENTS-URL/httpd.www/wp-includes/class-wp-hook.php(341): ppom_price_cart_fee(Object(WC_Cart))#2 /customers/a/e/2/CLIENTS-URL/httpd.www/wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters('', Array)#3 /customers/a/e/2/CLIENTS-URL/httpd.www/wp-includes/plugin.php(522): WP_Hook->do_action(Array)#4 /customers/a/e/2/CLIENTS-URL/httpd.www/wp-content/plugins/woocommerce/includes/class-wc-cart.php(2206): do_action('woocommerce_car...', Object(WC_Cart))#5 /customers/a/e/2/CLIENTS-URL/httpd.www/wp-content/plugins/woocommerce/includes/class-wc-cart-totals.php(276): WC_Cart->calculate_fees()#6 /customers/a/e/2/CLIENTS-URL/httpd.www/wp-content/plugins/woocommerce/includes/class-wc-cart-totals.php(839): WC_Cart_Totals->get_fees_from_cart()#7 /customers/a/e/2/CLIENTS-URL/httpd.www/wp-content/plugins/woocommerce/includes/class-wc-cart-totals.php(149): WC_Cart_Totals->calculate_fee_totals()#8 /customers/a/e/2/CLIENTS-URL/httpd.www/wp-content/plugins/woocommerce/includes/class-wc-cart-totals.php(138): WC_Cart_Totals->calculate()#9 /customers/a/e/2/CLIENTS-URL/httpd.www/wp-content/plugins/woocommerce/includes/class-wc-cart.php(1543): WC_Cart_Totals->__construct(Object(WC_Cart))#10 /customers/a/e/2/CLIENTS-URL/httpd.www/wp-content/plugins/woocommerce-product-addon/src/WooCommerce/Cart/CartHandler.php(530): WC_Cart->calculate_totals()#11 /customers/a/e/2/CLIENTS-URL/httpd.www/wp-content/plugins/woocommerce-product-addon/inc/woocommerce/cart.php(32): PPOM\WooCommerce\Cart\CartHandler::calculate_totals_from_session(Object(WC_Cart))#12 /customers/a/e/2/CLIENTS-URL/httpd.www/wp-includes/class-wp-hook.php(341): ppom_calculate_totals_from_session(Object(WC_Cart))#13 /customers/a/e/2/CLIENTS-URL/httpd.www/wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters('', Array)#14 /customers/a/e/2/CLIENTS-URL/httpd.www/wp-includes/plugin.php(522): WP_Hook->do_action(Array)#15 /customers/a/e/2/CLIENTS-URL/httpd.www/wp-content/plugins/woocommerce/includes/class-wc-cart-session.php(287): do_action('woocommerce_car...', Object(WC_Cart))#16 /customers/a/e/2/CLIENTS-URL/httpd.www/wp-includes/class-wp-hook.php(341): WC_Cart_Session->get_cart_from_session('')#17 /customers/a/e/2/CLIENTS-URL/httpd.www/wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters(NULL, Array)#18 /customers/a/e/2/CLIENTS-URL/httpd.www/wp-includes/plugin.php(522): WP_Hook->do_action(Array)#19 /customers/a/e/2/CLIENTS-URL/httpd.www/wp-settings.php(793): do_action('wp_loaded')#20 /customers/a/e/2/CLIENTS-URL/httpd.www/wp-config.php(93): require_once('/customers/a/e/...')#21 /customers/a/e/2/CLIENTS-URL/httpd.www/wp-load.php(50): require_once('/customers/a/e/...')#22 /customers/a/e/2/CLIENTS-URL/httpd.www/wp-admin/admin-ajax.php(22): require_once('/customers/a/e/...')#23 {main} thrown
       ```
   
 *  Plugin Support [Poonam Namdev](https://wordpress.org/support/users/poonam9/)
 * (@poonam9)
 * [2 weeks ago](https://wordpress.org/support/topic/update-error-136/#post-18940236)
 * Hi [@bluesapphiremedia](https://wordpress.org/support/users/bluesapphiremedia/),
 * Thank you for sharing the error.
 * We’ve identified the problem and have already escalated it to our development
   team. They are currently working on a fix, which is expected to be included in
   the next plugin update.
 * In the meantime, as a temporary workaround, you can roll back the plugin to the
   previous version, where this issue is not present.
 * We apologize for the inconvenience and appreciate your patience while we work
   on resolving this.
 *  Thread Starter [bluesapphiremedia](https://wordpress.org/support/users/bluesapphiremedia/)
 * (@bluesapphiremedia)
 * [2 weeks ago](https://wordpress.org/support/topic/update-error-136/#post-18941188)
 * Hi Thanks for looking into it, I can confirm I have already rolled back to Version
   34.0.0 and the issue is still there. I am also unable to access the Wordfence
   dashboard in places on this version
 *  Plugin Support [Poonam Namdev](https://wordpress.org/support/users/poonam9/)
 * (@poonam9)
 * [1 week, 6 days ago](https://wordpress.org/support/topic/update-error-136/#post-18941404)
 * Hi [@bluesapphiremedia](https://wordpress.org/support/users/bluesapphiremedia/),
 * Kindly rolled it back to version 33.0.18 and check if it resolves the issue.

Viewing 5 replies - 1 through 5 (of 5 total)

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 * ![](https://ps.w.org/woocommerce-product-addon/assets/icon-256x256.gif?rev=3186763)
 * [PPOM - Product Addons & Custom Fields for WooCommerce](https://wordpress.org/plugins/woocommerce-product-addon/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/woocommerce-product-addon/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/woocommerce-product-addon/)
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 * [Unresolved Topics](https://wordpress.org/support/plugin/woocommerce-product-addon/unresolved/)
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 * 5 replies
 * 3 participants
 * Last reply from: [Poonam Namdev](https://wordpress.org/support/users/poonam9/)
 * Last activity: [1 week, 6 days ago](https://wordpress.org/support/topic/update-error-136/#post-18941404)
 * Status: resolved