Title: Error message
Last modified: February 2, 2026

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# Error message

 *  Resolved [momo-fr](https://wordpress.org/support/users/momo-fr/)
 * (@momo-fr)
 * [4 months, 1 week ago](https://wordpress.org/support/topic/error-message-1080/)
 * Hi, whe have an error message from our store:
 * > Une erreur de type E_ERROR a été causée dans la ligne 127 du fichier /var/www/
   > vhosts/my-domain/wp-content/plugins/woocommerce/includes/admin/meta-boxes/views/
   > html-product-data-variations.php. Message d’erreur : Uncaught ValueError: Unknown
   > format specifier “a” in /var/www/vhosts/my-domain/wp-content/plugins/woocommerce/
   > includes/admin/meta-boxes/views/html-product-data-variations.php:127
   > Stack 
   > trace: 0 /var/www/vhosts/my-domain/wp-content/plugins/woocommerce/includes/
   > admin/meta-boxes/views/html-product-data-variations.php(127): sprintf() 1 /
   > var/www/vhosts/my-domain/wp-content/plugins/woocommerce/includes/admin/meta-
   > boxes/class-wc-meta-box-product-data.php(186): include(‘…’) 2 /var/www/vhosts/
   > my-domain/wp-content/plugins/woocommerce/includes/admin/meta-boxes/views/html-
   > product-data-panel.php(53): WC_Meta_Box_Product_Data::output_variations() 3/
   > var/www/vhosts/my-domain/wp-content/plugins/woocommerce/includes/admin/meta-
   > boxes/class-wc-meta-box-product-data.php(37): include(‘…’) 4 /var/www/vhosts/
   > my-domain/wp-admin/includes/template.php(1453): WC_Meta_Box_Product_Data::output()
   > 5 /var/www/vhosts/my-domain/wp-admin/edit-form-advanced.php(721): do_meta_boxes()
   > 6 /var/www/vhosts/my-domain/wp-admin/post.php(206): require(‘…’) 7 {main}
 * Our configuration are:
   WordPress version 6.9Thème actif : OceanWPExtension actuelle:
   WooCommerce (version 10.4.3)PHP version 8.3.30

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

 *  Plugin Support [shahzeen(woo-hc)](https://wordpress.org/support/users/shahzeenfarooq/)
 * (@shahzeenfarooq)
 * [4 months, 1 week ago](https://wordpress.org/support/topic/error-message-1080/#post-18806747)
 * Hi there!
   Thank you for sharing the error details. To assist you furtherz, could
   you please clarify **when exactly this error started appearing** on your site?
   Did it begin after you made any changes, added a new plugin, or updated WooCommerce?
 * The error you’re seeing indicates that WooCommerce is encountering an **unexpected
   format in the code**, specifically in the `sprintf()` function for product variations.
   This is usually caused by one of the following:
    - A **custom snippet or customization** on your site that modifies product variation
      data.
    - A **plugin conflict** that changes how WooCommerce outputs variation fields.
 * Also, I’d like to understand your site properly. Please share with us the necessary
   information below for us to investigate the issue further:
    - **System Status Report** which you can find via WooCommerce > Status
    - **Fatal error logs** (if any) under WooCommerce > Status > Logs.
 * Please use [https://pastebin.com/](https://pastebin.com/) or [https://gist.github.com/](https://gist.github.com/)
   and share a link to that paste in reply here. Once we have more information, 
   we’ll be able to assist you further.
 *  Plugin Support [Ejay F – a11n](https://wordpress.org/support/users/ejayfernandes/)
 * (@ejayfernandes)
 * [4 months ago](https://wordpress.org/support/topic/error-message-1080/#post-18819042)
 * I’m going to mark this as resolved, as we haven’t heard back from you in a while.
   Please open a new thread if you need further assistance.
 * We’d really appreciate if you could take a moment to leave us a review: [https://wordpress.org/support/plugin/woocommerce/reviews/](https://wordpress.org/support/plugin/woocommerce/reviews/)

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

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 * 2 replies
 * 3 participants
 * Last reply from: [Ejay F – a11n](https://wordpress.org/support/users/ejayfernandes/)
 * Last activity: [4 months ago](https://wordpress.org/support/topic/error-message-1080/#post-18819042)
 * Status: resolved