In ue5.5.4,I created a class UMVVM_LoadSlot that inherits from UMVVMViewModelBase. After creating a blueprint version in Blueprint and adding it to a UserWidget, I set it to Manual and called the Set function, but an error appeared showing that GetExtension returned nullptr. Upon debugging, I found that the Extensions in the Loop are empty. Where is the error? How can I resolve this?
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