MyParcelNL\Sdk\src\Exception\ApiException: "0 - data.shipments[5].pickup.retail_network_id NULL value found, but a string is required

[gerben86]

Plugin version

4.11.0

Magento version

2.4.5p1

PHP version

8.1

What went wrong?

An error in the AdminHTML when we're doing a mass action to print labels for 10 orders at once.

Reproduction steps

1. Navigate to the admin panel
2. Select orders to print a label
3. The error comes in the screen and labels aren't exported to PDF

Relevant log output

[2023-11-24T14:34:29.269597+00:00] main.CRITICAL: MyParcelNL\Sdk\src\Exception\ApiException: "0 - data.shipments[5].pickup.retail_network_id NULL value found, but a string is required - Unknown error: {\"code\":0,\"fields\":[\"data.shipments[5].pickup.retail_network_id\"],\"human\":[\"data.shipments[5].pickup.retail_network_id NULL value found, but a string is required\"]}. Please contact MyParcel." in /vendor/myparcelnl/sdk/src/Model/MyParcelRequest.php:397
Stack trace:
#0 /vendor/myparcelnl/sdk/src/Model/MyParcelRequest.php(209): MyParcelNL\Sdk\src\Model\MyParcelRequest->handleErrors()
#1 /vendor/myparcelnl/sdk/src/Helper/MyParcelCollection.php(281): MyParcelNL\Sdk\src\Model\MyParcelRequest->sendRequest()
#2 /vendor/myparcelnl/sdk/src/Helper/MyParcelCollection.php(456): MyParcelNL\Sdk\src\Helper\MyParcelCollection->createConcepts()
#3 /vendor/myparcelnl/magento/Model/Sales/MagentoOrderCollection.php(464): MyParcelNL\Sdk\src\Helper\MyParcelCollection->setPdfOfLabels()
#4 /vendor/myparcelnl/magento/Controller/Adminhtml/Order/CreateAndPrintMyParcelTrack.php(150): MyParcelNL\Magento\Model\Sales\MagentoOrderCollection->setPdfOfLabels()
#5 /vendor/myparcelnl/magento/Controller/Adminhtml/Order/CreateAndPrintMyParcelTrack.php(76): MyParcelNL\Magento\Controller\Adminhtml\Order\CreateAndPrintMyParcelTrack->massAction()
#6 /vendor/magento/framework/Interception/Interceptor.php(58): MyParcelNL\Magento\Controller\Adminhtml\Order\CreateAndPrintMyParcelTrack->execute()
#7 /vendor/magento/framework/Interception/Interceptor.php(138): MyParcelNL\Magento\Controller\Adminhtml\Order\CreateAndPrintMyParcelTrack\Interceptor->___callParent()
#8 /vendor/magento/framework/Interception/Interceptor.php(153): MyParcelNL\Magento\Controller\Adminhtml\Order\CreateAndPrintMyParcelTrack\Interceptor->Magento\Framework\Interception\{closure}()
#9 /generated/code/MyParcelNL/Magento/Controller/Adminhtml/Order/CreateAndPrintMyParcelTrack/Interceptor.php(23): MyParcelNL\Magento\Controller\Adminhtml\Order\CreateAndPrintMyParcelTrack\Interceptor->___callPlugins()
#10 /vendor/magento/framework/App/Action/Action.php(111): MyParcelNL\Magento\Controller\Adminhtml\Order\CreateAndPrintMyParcelTrack\Interceptor->execute()
#11 /vendor/magento/framework/Interception/Interceptor.php(58): Magento\Framework\App\Action\Action->dispatch()
#12 /vendor/magento/framework/Interception/Interceptor.php(138): MyParcelNL\Magento\Controller\Adminhtml\Order\CreateAndPrintMyParcelTrack\Interceptor->___callParent()
#13 /vendor/magento/framework/Interception/Interceptor.php(153): MyParcelNL\Magento\Controller\Adminhtml\Order\CreateAndPrintMyParcelTrack\Interceptor->Magento\Framework\Interception\{closure}()
#14 /generated/code/MyParcelNL/Magento/Controller/Adminhtml/Order/CreateAndPrintMyParcelTrack/Interceptor.php(32): MyParcelNL\Magento\Controller\Adminhtml\Order\CreateAndPrintMyParcelTrack\Interceptor->___callPlugins()
#15 /vendor/magento/framework/App/FrontController.php(245): MyParcelNL\Magento\Controller\Adminhtml\Order\CreateAndPrintMyParcelTrack\Interceptor->dispatch()
#16 /vendor/magento/framework/App/FrontController.php(212): Magento\Framework\App\FrontController->getActionResponse()
#17 /vendor/magento/framework/App/FrontController.php(147): Magento\Framework\App\FrontController->processRequest()
#18 /vendor/magento/framework/Interception/Interceptor.php(58): Magento\Framework\App\FrontController->dispatch()
#19 /vendor/magento/framework/Interception/Interceptor.php(138): Magento\Framework\App\FrontController\Interceptor->___callParent()
#20 /vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\App\FrontController\Interceptor->Magento\Framework\Interception\{closure}()
#21 /generated/code/Magento/Framework/App/FrontController/Interceptor.php(23): Magento\Framework\App\FrontController\Interceptor->___callPlugins()
#22 /vendor/magento/framework/App/Http.php(116): Magento\Framework\App\FrontController\Interceptor->dispatch()
#23 /vendor/magento/framework/App/Bootstrap.php(264): Magento\Framework\App\Http->launch()
#24 /pub/index.php(65): Magento\Framework\App\Bootstrap->run()
#25 {main} [] []

Additional context

No response