Visual Studio keeps saying my Autodesk.Revit.Atrributes.Transaction is a duplicate attribute.

[anefzger]

Hello, 

I am transitioning my team to Revit 2025 and I am running into a problem where the code we use to stop a pop up is not loading properly into the new program. I have had no problem with it since Revit 2020. Now visual studio keeps saying when I terminal build that the two items at the beginning, Autodesk.Revit.Attributes.Transaction and Autodesk.Revit.DB.Macros.AddInId are duplicate attributes and are preventing me from building this code in the new program. I have shared the text file of the code for reference and debugging. I have also attached the warnings I received when building the code. Any help would be appreciated greatly. 

Thanks, 

[jeremy_tammik]

It says "public partial class ThisApplication".  Where are the other parts?

[anefzger]

The AddInId and Transaction items have been removed for safety. I did not think there were other parts other than what I have included in my text document. public partial class is the standard set up information from I have seen from the documents. What other parts would I need?