Archviz Visibility problem

hello #, i have been recreating ArchViz explorer project and i keep getting visibility error even though its the same as the archviz project … even when i change the visibility its the same. and i dont know C++ of the widget component i just copied it

the error is
Accessed none trying to read property CallFun_UserWidgetObject_ReturnValue_1

The value from your GetUserWidgetObject function is none, this is why you get the error.
Check if your WidgetComponent actually has a user widget.

yes it does theres a script by C++