Error trying to add a web reference to dotnet core project. User canceled out of save dialog (Exception from HRESULT: 0x8004000C (OLE_E_PROMPTSAVECA

I have a dotnet core project that I need to a web reference to. I select the Microsoft WCF Web Service Reference provider and select the URL and click "Go" The correct service shows up under the "services" window. I change the namespace to something like mynewservice and press "finish."

The new window show adding connected service to project. Importing web service metadata ... Number of service endpoints found: 2 Scaffolding service reference code ... Warning:Warning: Reference cannot be loaded: 'System.Data.Entity', Could not load file or assembly 'System.Data.Entity, Culture=neutral, PublicKeyToken=null'. Reference assemblies should not be loaded for execution. They can only be loaded in the Reflection-only loader context. (Exception from HRESULT: 0x80131058) Updating project ... Error:User canceled out of save dialog (Exception from HRESULT: 0x8004000C (OLE_E_PROMPTSAVECANCELLED)) Done. Error:Adding Microsoft WCF Web Service Reference Provider to the project failed: User canceled out of save dialog (Exception from HRESULT: 0x8004000C (OLE_E_PROMPTSAVECANCELLED))

What do I need to do to get the reference installed? I've looked at previous examples and they usually indicate the proj file is locked but I can edit the proj file so it isn't locked. Any ideas?

I never found an answer, however the method suddenly starting working and I no longer got the error. Not sure what changed but now it installs correctly.