I have an ASP.NET MVC5 application that worked yesterday and now I am getting this error when I try to build:
This project references NuGet package(s)
I had the same error but in my case it was not related to nuget packages at all. My solution had project that had reference to other projects that were not a part of my solution and were not built. After building them with some other solution (or I could include them into my solution as well), AND re-opening my solution in visual studio the issue was resolved.