[Object] Unable to save localized field within block element

[solverat]

Create a layout like this:

• Create object
• Save object
• Error:

What I need to do now on API Level:

$localizedField = new DataObject\Localizedfield($data);
$localizedField->setObject($object); // can't be right + only since pimcore 5.7.2

@brusch: Sorry, I missed that one in our #4151 test process.