Object property is not valid when in blueprint child class

[GustavoDBP]

I got the solution.

The blueprint “Inventory” property was set to null. I just needed to change it to the default instance of “UInventory” instantiated at contructor of the C++ class.

APerson_Character::APerson_Character()
{
	//
	// Some code...
	//

	// Instantiate the new object of UInventory.
	Inventory = CreateDefaultSubobject<UInventory>(FName("Inventory"));
}

At the details tab, in editor, I needed to click to set the default value of “Inventory” property, like that

And of course needed to change the UPROPERTY like that

	UPROPERTY(EditDefaultsOnly, BlueprintReadOnly)
	UInventory* Inventory;