2 orders instead of 1

This thread is resolved. Here is a description of the problem and solution.

Problem:
The client was experiencing an issue where attempting to order a product with only 1 in stock resulted in an error, and it appeared as though two orders were created, but only one was processed in the admin. This occurred when WPML String Translation was enabled, and there was also a problem with the refund process when WPML Multilingual CMS was active.
Solution:
We identified a PHP fatal error related to a format specifier in the WooCommerce email notification system. The error was traced to a translation string for the 'out of stock' message in WPML String Translation, which had an incorrect format. We corrected the translation from "Níl stoc de % againn." to "Níl stoc de %s againn." and verified that the checkout and refund processes functioned correctly thereafter. For further details on this type of error, you can refer to the documentation at https://wpml.org/errata/php-8-php-fatal-error-uncaught-valueerror-unknown-format-specifier-in/.

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Tagged: Known issue, WCML

This topic contains 6 replies, has 2 voices.

Last updated by Long Nguyen 2 weeks ago.

Assisted by: Long Nguyen.

Author	Posts
September 18, 2024 at 8:39 am #16191696
David Henry	Background of the issue: I am trying to order a product with only 1 in stock on my site hidden link. Symptoms: The customer sees an error and it looks like two orders have been created, but only one order has gone through in the admin. Questions: Is there any documentation that covers this issue?
September 18, 2024 at 9:43 am #16191974
Long Nguyen Supporter Languages: English (English ) Timezone: Asia/Ho_Chi_Minh (GMT+07:00)	Hi, Here is the forum ticket. I observed that after completing the order, the product stock was not synced correctly in the admin area. It could be affected by another plugin or code on the site. I suggest you copy your site to a staging site then make some tests: 1. Enable a minimal environment: - Deactivate all plugins except WPML plugins and WooCommerce. - Switch to a standard theme of WordPress. 2. Deactivate only WPML and keep other plugins activated. Looking forward to your reply. Thanks
September 19, 2024 at 5:18 pm #16200402
David Henry	Hi There, I've disabled all plugins and themes and have found that there are still two issues. 1. "There was an error processing your payment..." hidden link This issue only happens when WPML String Translation is enabled. 2. The refund process doesn't work properly, see: hidden link This only happens with WPML Multilingual CMS is active To me is sounds like there are issues with the translations, most likely due to an odd character that can happen with the Irish language. How do I investigate which language string is the problem? I'm happy to remove all admin translations, I don't think they should be there anyway, I've inherited these. Can you take a look? [supporter removed] David
September 20, 2024 at 2:08 am #16201026
Long Nguyen Supporter Languages: English (English ) Timezone: Asia/Ho_Chi_Minh (GMT+07:00)	Hi David, I found the issue. There is an error in the debug log when processing the checkout [20-Sep-2024 01:53:24 UTC] PHP Fatal error: Uncaught ValueError: Unknown format specifier "a" in /usr/www/users/siopalea/stage/wp-content/plugins/woocommerce/includes/class-wc-emails.php:735 Stack trace: #0 /usr/www/users/siopalea/stage/wp-content/plugins/woocommerce/includes/class-wc-emails.php(735): sprintf() #1 /usr/www/users/siopalea/stage/wp-content/plugins/woocommerce-multilingual/inc/class-wcml-emails.php(857): WC_Emails->no_stock() #2 /usr/www/users/siopalea/stage/wp-content/plugins/woocommerce-multilingual/inc/class-wcml-emails.php(833): WCML_Emails->admin_notification() #3 /usr/www/users/siopalea/stage/wp-includes/class-wp-hook.php(324): WCML_Emails->no_stock_admin_notification() #4 /usr/www/users/siopalea/stage/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters() #5 /usr/www/users/siopalea/stage/wp-includes/plugin.php(565): WP_Hook->do_action() #6 /usr/www/users/siopalea/stage/wp-content/plugins/woocommerce/includes/class-wc-emails.php(172): do_action_ref_array() #7 /usr/www/users/siopalea/stage/wp-includes/class-wp-hook.php(324): WC_Emails::send_transactional_email() #8 /usr/www/users/siopalea/stage/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters() #9 /usr/www/users/siopalea/stage/wp-includes/plugin.php(517): WP_Hook->do_action() #10 /usr/www/users/siopalea/stage/wp-content/plugins/woocommerce/includes/wc-stock-functions.php(259): do_action() #11 /usr/www/users/siopalea/stage/wp-content/plugins/woocommerce/includes/wc-stock-functions.php(228): wc_trigger_stock_change_notifications() #12 /usr/www/users/siopalea/stage/wp-content/plugins/woocommerce/includes/wc-stock-functions.php(117): wc_reduce_stock_levels() #13 /usr/www/users/siopalea/stage/wp-includes/class-wp-hook.php(326): wc_maybe_reduce_stock_levels() #14 /usr/www/users/siopalea/stage/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters() #15 /usr/www/users/siopalea/stage/wp-includes/plugin.php(517): WP_Hook->do_action() #16 /usr/www/users/siopalea/stage/wp-content/plugins/woocommerce/includes/class-wc-order.php(411): do_action() #17 /usr/www/users/siopalea/stage/wp-content/plugins/woocommerce/includes/class-wc-order.php(253): WC_Order->status_transition() #18 /usr/www/users/siopalea/stage/wp-content/plugins/woocommerce/includes/class-wc-order.php(365): WC_Order->save() #19 /usr/www/users/siopalea/stage/wp-content/plugins/woocommerce/includes/gateways/cheque/class-wc-gateway-cheque.php(136): WC_Order->update_status() #20 /usr/www/users/siopalea/stage/wp-content/plugins/woocommerce/includes/class-wc-checkout.php(1062): WC_Gateway_Cheque->process_payment() #21 /usr/www/users/siopalea/stage/wp-content/plugins/woocommerce/includes/class-wc-checkout.php(1293): WC_Checkout->process_order_payment() #22 /usr/www/users/siopalea/stage/wp-content/plugins/woocommerce/includes/class-wc-ajax.php(520): WC_Checkout->process_checkout() #23 /usr/www/users/siopalea/stage/wp-includes/class-wp-hook.php(324): WC_AJAX::checkout() #24 /usr/www/users/siopalea/stage/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters() #25 /usr/www/users/siopalea/stage/wp-includes/plugin.php(517): WP_Hook->do_action() #26 /usr/www/users/siopalea/stage/wp-content/plugins/woocommerce/includes/class-wc-ajax.php(96): do_action() #27 /usr/www/users/siopalea/stage/wp-includes/class-wp-hook.php(324): WC_AJAX::do_wc_ajax() #28 /usr/www/users/siopalea/stage/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters() #29 /usr/www/users/siopalea/stage/wp-includes/plugin.php(517): WP_Hook->do_action() #30 /usr/www/users/siopalea/stage/wp-includes/template-loader.php(13): do_action() #31 /usr/www/users/siopalea/stage/wp-blog-header.php(19): require_once('/usr/www/users/...') #32 /usr/www/users/siopalea/stage/index.php(17): require('/usr/www/users/...') #33 {main} thrown in /usr/www/users/siopalea/stage/wp-content/plugins/woocommerce/includes/class-wc-emails.php on line 735 the code in the file wp-content/plugins/woocommerce/includes/class-wc-emails.php line 735 is $message = sprintf( __( '%s is out of stock.', 'woocommerce' ), html_entity_decode( wp_strip_all_tags( $product->get_formatted_name() ), ENT_QUOTES, get_bloginfo( 'charset' ) ) ); then I search for the string "%s is out of stock" in WPML > String Translation and see that the translation string doesn't have the correct format for the placeholder "Níl stoc de % againn.", see the attached screenshot. I correct the translation to "Níl stoc de %s againn." and save it. Now I can complete the checkout process and refund the order as well. Refer documentation https://wpml.org/errata/php-8-php-fatal-error-uncaught-valueerror-unknown-format-specifier-in/ Looking forward to your reply. Thanks
September 20, 2024 at 8:53 am #16201704
David Henry	Thanks, I can see it's missing the "s". I'll now try the same method to resolve the refund issue.
September 20, 2024 at 9:47 am #16202196
David Henry	I've also fixed the refund problem that again, had a missing s. Thanks for your help. d
September 20, 2024 at 10:19 am #16202361
Long Nguyen Supporter Languages: English (English ) Timezone: Asia/Ho_Chi_Minh (GMT+07:00)	Feel free to contact us again if you have any questions. Thanks.

David Henry confirmed that the issue was resolved on 2024-09-20 11:47:01.
This ticket is now closed. If you're a WPML client and need related help, please open a new support ticket.