Title: errors after update
Last modified: February 6, 2026

---

# errors after update

 *  Resolved [mfrashcom](https://wordpress.org/support/users/mfrashcom/)
 * (@mfrashcom)
 * [4 months ago](https://wordpress.org/support/topic/errors-after-update-28/)
 * i get error after update 2026-02-06 05:00:12.752750 [NOTICE] [3342365] [T0] [
   51.39.229.68:5693:HTTP2-87#APVH_mfrash.com:443] [STDERR] PHP Fatal error: Trait“
   Automattic\WooCommerce\Internal\Traits\RestApiCache” not found in /home/mfrashc1/
   public_html/wp-content/plugins/woocommerce/includes/rest-api/Controllers/Version2/
   class-wc-rest-products-v2-controller.php on line 27\n
 * and problem in variation after choosing variation submit button keep disabled(
   urgent) now customers cant add to cart after update
    -  This topic was modified 4 months ago by [mfrashcom](https://wordpress.org/support/users/mfrashcom/).

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

 *  [LovingBro (woo-hc)](https://wordpress.org/support/users/lovingbro/)
 * (@lovingbro)
 * [4 months ago](https://wordpress.org/support/topic/errors-after-update-28/#post-18811935)
 * Hi [@mfrashcom](https://wordpress.org/support/users/mfrashcom/),
 * I see how disruptive this is, especially with customers currently unable to add
   products to the cart after the update. That kind of break in the purchase flow
   definitely needs immediate attention and I am keen to help you get this stabilized.
 * The fatal error you shared points to a missing WooCommerce internal trait, which
   usually happens when the update did not complete cleanly or when files are out
   of sync. The first step here would be to reupload the WooCommerce plugin files
   to ensure nothing is missing. You can do this by deleting the WooCommerce plugin
   folder and reinstalling the latest version from your dashboard or via FTP.
 * If the issue started immediately after the update, it would also be useful to
   temporarily roll back to the previous WooCommerce version that was working, confirm
   the site behavior returns to normal, and then attempt the update again. This 
   helps confirm whether the update process itself is the trigger. A rollback plugin
   can help with this if needed.
 * For the variation issue and disabled Add to cart button, this can sometimes be
   related to JavaScript errors caused by plugin or theme conflicts after an update.
   As a test, please try disabling all plugins except WooCommerce and switching 
   temporarily to a default theme such as Storefront or Twenty Twenty Four, then
   check if variable products can be added to the cart again. A guide for plugin
   conflict test: [https://woocommerce.com/document/how-to-test-for-conflicts/](https://woocommerce.com/document/how-to-test-for-conflicts/).
 * To help us look deeper, please share your WooCommerce system status report by
   going to WooCommerce, Status, Get system report, then Copy for support. Paste
   the report into [https://pastebin.com](https://pastebin.com) and share the link
   here.
 * Once you carryout the above recommendation and share your status report, we can
   guide you more precisely on the next steps to get your store fully operational
   again.
 *  Thread Starter [mfrashcom](https://wordpress.org/support/users/mfrashcom/)
 * (@mfrashcom)
 * [4 months ago](https://wordpress.org/support/topic/errors-after-update-28/#post-18811949)
 * about add to cart it is urgent because now website is disabled
 * and here is my website statue [https://pastebin.com/sMay4Khm](https://pastebin.com/sMay4Khm)
 *  [LovingBro (woo-hc)](https://wordpress.org/support/users/lovingbro/)
 * (@lovingbro)
 * [4 months ago](https://wordpress.org/support/topic/errors-after-update-28/#post-18812011)
 * Hi [@mfrashcom](https://wordpress.org/support/users/mfrashcom/),
 * Thank you for sharing your system status report. I had a look, and everything
   appears generally okay, though I notice you have quite a few active plugins which
   could potentially conflict with WooCommerce.
 * I wanted to check if you’ve had a chance to carry out the recommendations from
   my earlier reply. Just to recap, the next steps would be to try reinstalling 
   WooCommerce to ensure all files are correctly in place. If the issue persists
   after that, it would be best to perform a plugin conflict test by deactivating
   all other plugins and testing, then reactivating them one by one to identify 
   any conflicts.
 * This approach usually helps pinpoint what’s causing the Add to Cart button and
   variation issues.
 *  Plugin Contributor [Karol Manijak](https://wordpress.org/support/users/karolmanijak/)
 * (@karolmanijak)
 * [4 months ago](https://wordpress.org/support/topic/errors-after-update-28/#post-18812259)
 * Hi [@mfrashcom](https://wordpress.org/support/users/mfrashcom/),
 * > and problem in variation after choosing variation submit button keep disabled(
   > urgent) now customers cant add to cart after update
 * We noticed the issue when using Variation Swatches for WooCommerce (see [dedicated thread](https://wordpress.org/support/topic/pro-not-working-with-woocommerce-10-5-0/))
   and I see in your SSR you’re using this plugin. Could you try disabling the plugin
   to see if the issue persist?
 * If so, this is most likely related to the change we announced in Dev Advisory:
   [Add to Cart button disabled by default in variable products in WooCommerce 10.5](https://developer.woocommerce.com/2026/01/16/add-to-cart-button-disabled-by-default-in-variable-products-in-woocommerce-10-5/).
 *  Plugin Support [Kay U a11n](https://wordpress.org/support/users/kingsleyinfo/)
 * (@kingsleyinfo)
 * [3 months, 2 weeks ago](https://wordpress.org/support/topic/errors-after-update-28/#post-18826148)
 * Since we haven’t received any updates from you, I’ll mark this as resolved for
   now. If you need further assistance, you’re welcome to start a new thread.
 * We’d love your feedback – please leave us a review: [https://wordpress.org/support/plugin/woocommerce/reviews/](https://wordpress.org/support/plugin/woocommerce/reviews/)

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

You must be [logged in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Ferrors-after-update-28%2F%3Foutput_format%3Dmd&locale=en_US)
to reply to this topic.

 * ![](https://ps.w.org/woocommerce/assets/icon.svg?rev=3234504)
 * [WooCommerce](https://wordpress.org/plugins/woocommerce/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/woocommerce/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/woocommerce/)
 * [Active Topics](https://wordpress.org/support/plugin/woocommerce/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/woocommerce/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/woocommerce/reviews/)

## Tags

 * [urgent](https://wordpress.org/support/topic-tag/urgent/)

 * 5 replies
 * 4 participants
 * Last reply from: [Kay U a11n](https://wordpress.org/support/users/kingsleyinfo/)
 * Last activity: [3 months, 2 weeks ago](https://wordpress.org/support/topic/errors-after-update-28/#post-18826148)
 * Status: resolved