So I'm trying to learn Asp Core.

Currently following the docs tutorial: https://docs.microsoft.com/en-us/aspnet/core/tutorials/razor-pages/model?view=aspnetcore-2.2&tabs=visual-studio

When I try to add new scaffolded item (CRUD Razor Pages) I get the following error

https://i.imgur.com/h6yoRwP.png

Anyone got any idea how to fix? I tried building and then adding but still got the error.