Internal Server Error in /V1/order/{orderId}/ship API Endpoint

[mlf20]

Preconditions and environment

• Magento version 2.4

Steps to reproduce

1. Retrieve auth token from the admin endpoint /V1/integration/admin/
2. Request endpoint: POST : //yourstore/rest/V1/order/{orderId}/ship
   Payload:
   {
   "items": "[]"
   }

Other below APi's also got effected and getting similar error in logs:

1. POST request to /V1/inventory/stock-source-links with payload:
   {"links": "[]"}
2. POST request to /rest/V1/inventory/source-items with payload:
   {"sourceItems": "\[]\"}
3. POST request to //V1/inventory/low-quantity-notification with payload:
   {"sourceItemConfigurations": ""}
4. POST request to /rest/V1/inventory/stock-source-links-delete with payload:
   {"links": "\[]\"}

Expected result

Returns a 400 error as the request is malformed.

Actual result

Returns a 500 status code from a null TypeError .

Additional information

output of var/log/system.log:

	[2022-08-01T12:54:49.463557+00:00] main.CRITICAL: TypeError: Magento\Sales\Model\ShipOrder::execute(): Argument #2 ($items) must be of type array, null given in /magento/vendor/magento/module-sales/Model/ShipOrder.php:133
	Stack trace:
	#0 [internal function]: Magento\Sales\Model\ShipOrder->execute()
	#1 /magento/vendor/magento/module-webapi/Controller/Rest/SynchronousRequestProcessor.php(95): call_user_func_array()
	#2 /magento/vendor/magento/module-webapi/Controller/Rest.php(188): Magento\Webapi\Controller\Rest\SynchronousRequestProcessor->process()
	#3 /magento/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Webapi\Controller\Rest->dispatch()
	#4 /magento/vendor/magento/framework/Interception/Interceptor.php(138): Magento\Webapi\Controller\Rest\Interceptor->___callParent()
	#5 /magento/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Webapi\Controller\Rest\Interceptor->Magento\Framework\Interception\{closure}()
	#6 /magento/generated/code/Magento/Webapi/Controller/Rest/Interceptor.php(23): Magento\Webapi\Controller\Rest\Interceptor->___callPlugins()
	#7 /magento/vendor/magento/framework/App/Http.php(116): Magento\Webapi\Controller\Rest\Interceptor->dispatch()
	#8 /magento/generated/code/Magento/Framework/App/Http/Interceptor.php(23): Magento\Framework\App\Http->launch()
	#9 /magento/vendor/magento/framework/App/Bootstrap.php(264): Magento\Framework\App\Http\Interceptor->launch()
	#10 /magento/pub/index.php(30): Magento\Framework\App\Bootstrap->run()
	#11 {main} [] []

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 @mlf20. Thank you for your report.
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[m2-assistant]

Hi @engcom-November. Thank you for working on this issue.
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[engcom-November]

Hi @mlf20 ,
Thank you for reporting and collaboration. This issue is not reproducible on 2.4-develop branch
The exception mentioned in all the below issues reported by you is the similar error/ issue which is not reproducible on 2.4-develop branch. Can we close all the other issues and track in a single bug: #35934
Similar issues having same kind of exception:
#35929
#35928
#35927
#35926
#35931
#35930

We are getting a 400 error as the request is malformed.
Kindly check Magento system requirements and 3rd party exntensions / modules enabled is causing this issue.
Kindly recheck the issue on Magento 2.4-develop branch and provide missing steps if any if you are still facing any issues.
Thank you

[mlf20]

Hi @engcom-November

I have gone over my logs and the payload in the body should be '{}'

This reproduces the issue on Magento 2.4-dev as shown below: