I am trying to update a batch task plug-in to Studio 2021. It does not compile due to the error shown below.

I then tried to create a new plug-in using only the skeleton code provided by the VS plug-in for Studio 2021. I am getting the same error in the MyCustomBatchTaskSettingsPage.cs class, i.e. 

The type "SDL_Custom_Batch_Task1.MyCustomBatchTaskSettingsControl" cannot be used as type parameter "TControl" in the generic type or in the generic method "DefaultSettingsPage<TControl, TSettings>". There is no implicit reference conversion of "SDL_Custom_Batch_Task1.MyCustomBatchTaskSettingsControl" to "Sdl.Desktop.IntegrationApi.Interfaces.IUISettingsControl".

Is there any known issue here?