TypeError: hasattr(): attribute name must be string

[Muddasir-Shakil]

I was creating an information model nodeset for my application and I needed some structured datatypes, so I followed the steps for creating custom structure type. But when I saved and closed my modeler then I could not reopen the .uamodel file or either import .xml file in the modeler. I get the following error:
TypeError: hasattr(): attribute name must be string
Important info: I am using Opc.Ua.Di.Nodeset2.xml also as one of the based Nodeset for my custom nodeset
I do not have a clue how to solve that?

[oroulet]

Can you share your datamodel? did you use master or pip installation?

[Muddasir-Shakil]

the datamodel is here: https://github.com/Muddasir-Shakil/Opc.Ua.Ieee21451.NodeSet
I used master for installation

[rekikfadwa]

I have the same problem. Did you get the solution for that?