Fatal error: Uncaught Error: Call to a member function addData() on null

[ADDISON74]

OpenMage 20.3.0 Magento Sample Pack PHP 8.3 MAGE_IS_DEVELOPER_MODE=1

Steps to reproduce this issue

1 - Go to the Backend > System > Import / Export > Dataflow - Advanced Profiles 2 - Click on the [Add New Profile] button 3 - Fill in "New Profile" and "Action XML" then click the [Save and Continue Edit] button

You will get this error

Fatal error:  Uncaught Error: Call to a member function addData() on null in /var/www/html/app/code/core/Mage/Adminhtml/controllers/System/Convert/ProfileController.php:119
Stack trace:
#0 /var/www/html/app/code/core/Mage/Core/Controller/Varien/Action.php(421): Mage_Adminhtml_System_Convert_ProfileController->editAction()
#1 /var/www/html/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(255): Mage_Core_Controller_Varien_Action->dispatch()
#2 /var/www/html/app/code/core/Mage/Core/Controller/Varien/Front.php(181): Mage_Core_Controller_Varien_Router_Standard->match()
#3 /var/www/html/app/code/core/Mage/Core/Model/App.php(358): Mage_Core_Controller_Varien_Front->dispatch()
#4 /var/www/html/app/Mage.php(760): Mage_Core_Model_App->run()
#5 /var/www/html/index.php(56): Mage::run()
#6 {main}
  thrown in /var/www/html/app/code/core/Mage/Adminhtml/controllers/System/Convert/ProfileController.php on line 119

This is the PHP file and the line:

/app/code/core/Mage/Adminhtml/controllers/System/Convert/ProfileController.php:119

[kiatng]

I cannot replicate this error.

Ref https://github.com/OpenMage/magento-lts/blob/c5b35aa9da03142873ddd22af7cca0ebcb077bd9/app/code/core/Mage/Adminhtml/controllers/System/Convert/ProfileController.php#L30-L53

which is called in https://github.com/OpenMage/magento-lts/blob/c5b35aa9da03142873ddd22af7cca0ebcb077bd9/app/code/core/Mage/Adminhtml/controllers/System/Convert/ProfileController.php#L108-L110

$profile cannot be null because of line 37 $profile = Mage::getModel('dataflow/profile');.

It must be something else for you to get

Fatal error: Uncaught Error: Call to a member function addData() on null

Is the dataflow module disabled or is it missing? Regardless, it is more probable that something is wrong with your particular instance rather than OpenMage.

[ADDISON74]

This proves the error based on the configuration mentioned in the initial post

https://github.com/OpenMage/magento-lts/assets/8360474/4fc8b213-afbe-40ea-88ce-8f4cba549ca9