Undefined array key "simple_free_shipping" - vendor/magento/module-sales-rule/Controller/Adminhtml/Promo/Quote/Save.php

[rossparachute]

Preconditions and environment

We've noticed this is a problem, likely only on 2.4.6 and below as the 2.4-develop sorted it. We've never got that via composer though. Patch below.

Saves you having to create a plugin or edit the line every patch install on affected versions.

Marked as S1 severity as the client could no longer create any cart price sales rules.

Environment

• v2.4.6-p10
• PHP v8.1
• MariaDB v10.5
• ElasticSearch v7.17
• Debian GNU/Linux 11 (bullseye), Linux 5.10.0-33-cloud-amd64

Steps to reproduce

1. Marketing > Cart Price Rules
2. Create a blank rule, don't check "Apply to Shipping Amount"
3. Save the rule
4. The WSOD will show and the following exception will be logged

main.CRITICAL: Exception: Warning: Undefined array key "simple_free_shipping" in <mnt_path>/public_html/vendor/magento/module-sales-rule/Controller/Adminhtml/Promo/Quote/Save.php on line 67 in <mnt_path>/public_html/vendor/magento/framework/App/ErrorHandler.php:62
Stack trace:
#0 <mnt_path>/public_html/vendor/magento/module-sales-rule/Controller/Adminhtml/Promo/Quote/Save.php(67): Magento\Framework\App\ErrorHandler->handler()
#1 <mnt_path>/public_html/vendor/magento/framework/Interception/Interceptor.php(58): Magento\SalesRule\Controller\Adminhtml\Promo\Quote\Save->execute()
#2 <mnt_path>/public_html/vendor/magento/framework/Interception/Interceptor.php(138): Magento\SalesRule\Controller\Adminhtml\Promo\Quote\Save\Interceptor->___callParent()
#3 <mnt_path>/public_html/vendor/meta/module-business-extension/Plugin/LoggingPluginBase.php(137): Magento\SalesRule\Controller\Adminhtml\Promo\Quote\Save\Interceptor->Magento\Framework\Interception\{closure}()
#4 <mnt_path>/public_html/vendor/meta/module-business-extension/Plugin/LoggingPluginBase.php(85): Meta\BusinessExtension\Plugin\LoggingPluginBase->wrapCallableWithLogging()
#5 <mnt_path>/public_html/vendor/meta/module-business-extension/Plugin/LoggingActionPlugin.php(45): Meta\BusinessExtension\Plugin\LoggingPluginBase->wrapCallableWithErrorAndImpressionLogging()
#6 <mnt_path>/public_html/vendor/magento/framework/Interception/Interceptor.php(135): Meta\BusinessExtension\Plugin\LoggingActionPlugin->aroundExecute()
#7 <mnt_path>/public_html/vendor/magento/framework/Interception/Interceptor.php(153): Magento\SalesRule\Controller\Adminhtml\Promo\Quote\Save\Interceptor->Magento\Framework\Interception\{closure}()
#8 <mnt_path>/public_html/generated/code/Magento/SalesRule/Controller/Adminhtml/Promo/Quote/Save/Interceptor.php(23): Magento\SalesRule\Controller\Adminhtml\Promo\Quote\Save\Interceptor->___callPlugins()
#9 <mnt_path>/public_html/vendor/magento/framework/App/Action/Action.php(111): Magento\SalesRule\Controller\Adminhtml\Promo\Quote\Save\Interceptor->execute()
#10 <mnt_path>/public_html/vendor/magento/module-backend/App/AbstractAction.php(151): Magento\Framework\App\Action\Action->dispatch()
#11 <mnt_path>/public_html/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Backend\App\AbstractAction->dispatch()
#12 <mnt_path>/public_html/vendor/magento/framework/Interception/Interceptor.php(138): Magento\SalesRule\Controller\Adminhtml\Promo\Quote\Save\Interceptor->___callParent()
#13 <mnt_path>/public_html/app/code/WeltPixel/Backend/Plugin/Utility.php(76): Magento\SalesRule\Controller\Adminhtml\Promo\Quote\Save\Interceptor->Magento\Framework\Interception\{closure}()
#14 <mnt_path>/public_html/vendor/magento/framework/Interception/Interceptor.php(135): WeltPixel\Backend\Plugin\Utility->aroundDispatch()
#15 <mnt_path>/public_html/vendor/magento/module-backend/App/Action/Plugin/Authentication.php(145): Magento\SalesRule\Controller\Adminhtml\Promo\Quote\Save\Interceptor->Magento\Framework\Interception\{closure}()
#16 <mnt_path>/public_html/vendor/magento/framework/Interception/Interceptor.php(135): Magento\Backend\App\Action\Plugin\Authentication->aroundDispatch()
#17 <mnt_path>/public_html/vendor/magento/framework/Interception/Interceptor.php(153): Magento\SalesRule\Controller\Adminhtml\Promo\Quote\Save\Interceptor->Magento\Framework\Interception\{closure}()
#18 <mnt_path>/public_html/generated/code/Magento/SalesRule/Controller/Adminhtml/Promo/Quote/Save/Interceptor.php(32): Magento\SalesRule\Controller\Adminhtml\Promo\Quote\Save\Interceptor->___callPlugins()
#19 <mnt_path>/public_html/vendor/magento/framework/App/FrontController.php(245): Magento\SalesRule\Controller\Adminhtml\Promo\Quote\Save\Interceptor->dispatch()
#20 <mnt_path>/public_html/vendor/magento/framework/App/FrontController.php(212): Magento\Framework\App\FrontController->getActionResponse()
#21 <mnt_path>/public_html/vendor/magento/framework/App/FrontController.php(147): Magento\Framework\App\FrontController->processRequest()
#22 <mnt_path>/public_html/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Framework\App\FrontController->dispatch()
#23 <mnt_path>/public_html/vendor/magento/framework/Interception/Interceptor.php(138): Magento\Framework\App\FrontController\Interceptor->___callParent()
#24 <mnt_path>/public_html/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\App\FrontController\Interceptor->Magento\Framework\Interception\{closure}()
#25 <mnt_path>/public_html/generated/code/Magento/Framework/App/FrontController/Interceptor.php(23): Magento\Framework\App\FrontController\Interceptor->___callPlugins()
#26 <mnt_path>/public_html/vendor/magento/framework/App/Http.php(116): Magento\Framework\App\FrontController\Interceptor->dispatch()
#27 <mnt_path>/public_html/generated/code/Magento/Framework/App/Http/Interceptor.php(23): Magento\Framework\App\Http->launch()
#28 <mnt_path>/public_html/vendor/magento/framework/App/Bootstrap.php(264): Magento\Framework\App\Http\Interceptor->launch()
#29 <mnt_path>/public_html/pub/index.php(30): Magento\Framework\App\Bootstrap->run()
#30 {main} {"report_id":"89c61a7fb8a29743074bb5d254220de33d132809d6da7fe2140b4ff8bb13c6d3","exception":"[object] (Exception(code: 0): Warning: Undefined array key \"simple_free_shipping\" in <mnt_path>/public_html/vendor/magento/module-sales-rule/Controller/Adminhtml/Promo/Quote/Save.php on line 67 at <mnt_path>/public_html/vendor/magento/framework/App/ErrorHandler.php:62)"} []

Expected result

The rule is saved successfully.

Actual result

The rule is not saved successfully and a WSOD is shown.

Additional information

Fix
How to Apply
Patch via Composer

20250417-Magento-SalesRule-Controller-Adminhtml-Promo-Quote.patch

From: Ross Parachute <foo@bar.com>
Date: Thu, 17 Apr 2025 10:49:52 +0000
Subject: [PATCH] Magento/SalesRule/Controller/Adminhtml/Promo/Quote
 /Save.php::L67 null coalesce ternary fix

---
 .../module-sales-rule/Controller/Adminhtml/Promo/Quote/Save.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/vendor/magento/module-sales-rule/Controller/Adminhtml/Promo/Quote/Save.php b/vendor/magento/module-sales-rule/Controller/Adminhtml/Promo/Quote/Save.php
index e407142..aefadd0 100644
--- a/vendor/magento/module-sales-rule/Controller/Adminhtml/Promo/Quote/Save.php
+++ b/vendor/magento/module-sales-rule/Controller/Adminhtml/Promo/Quote/Save.php
@@ -64,7 +64,7 @@ class Save extends \Magento\SalesRule\Controller\Adminhtml\Promo\Quote implement
     {
         $data = $this->getRequest()->getPostValue();
         if ($data) {
-            $data['simple_free_shipping'] = ($data['simple_free_shipping'] === '')
+            $data['simple_free_shipping'] = (($data['simple_free_shipping'] ?? '') === '')
                     ? null : $data['simple_free_shipping'];
 
             try {
-- 
2.30.2

Release note

No response

Triage and priority

• Severity: S0 - Affects critical data or functionality and leaves users without workaround.
• Severity: S1 - Affects critical data or functionality and forces users to employ a workaround.
• Severity: S2 - Affects non-critical data or functionality and forces users to employ a workaround.
• Severity: S3 - Affects non-critical data or functionality and does not force users to employ a workaround.
• Severity: S4 - Affects aesthetics, professional look and feel, “quality” or “usability”.

[m2-assistant]

Hi @rossparachute. Thank you for your report.
To speed up processing of this issue, make sure that the issue is reproducible on the vanilla Magento instance following Steps to reproduce.

• For more details, review the Magento Contributor Assistant documentation.
• Add a comment to assign the issue: @magento I am working on this
• To learn more about issue processing workflow, refer to the Code Contributions.

---

Join Magento Community Engineering Slack and ask your questions in #github channel.
⚠️ According to the Magento Contribution requirements, all issues must go through the Community Contributions Triage process. Community Contributions Triage is a public meeting.
🕙 You can find the schedule on the Magento Community Calendar page.
📞 The triage of issues happens in the queue order. If you want to speed up the delivery of your contribution, join the Community Contributions Triage session to discuss the appropriate ticket.

[m2-assistant]

Hi @engcom-Bravo. Thank you for working on this issue.
In order to make sure that issue has enough information and ready for development, please read and check the following instruction: 👇

• 1. Verify that issue has all the required information. (Preconditions, Steps to reproduce, Expected result, Actual result).
• 2. Verify that issue has a meaningful description and provides enough information to reproduce the issue.
• 3. Add Area: XXXXX label to the ticket, indicating the functional areas it may be related to.
• 4. Verify that the issue is reproducible on 2.4-develop branch
  Details

  - If the issue is reproducible on 2.4-develop branch, please, add the label Reproduced on 2.4.x.
  - If the issue is not reproducible, add your comment that issue is not reproducible and close the issue and stop verification process here!
• 5. Add label Issue: Confirmed once verification is complete.
• 6. Make sure that automatic system confirms that report has been added to the backlog.

[engcom-Bravo]

Hi @rossparachute,

Thanks for your reporting and collaboration.

We have tried to reproduce the issue in latest 2.4-develop instance and we are not able to reproduce the issue.Kindly refer the attached video.

Screen.Recording.2025-04-21.at.3.57.41.pm.mov

The rule is saved successfully.

Kindly recheck the issue in latest 2.4-develop instance and elaborate the steps to reproduce if the issue is still reproducible.

Thanks.

[engcom-Bravo]

Hi @rossparachute,

This issue is being closed since it has not been updated in a long time.Please feel free to reopen or raise a new ticket if the issue still exists.

Thanks.