What do Yellow Warning Triangles mean on Dependencies in Visual Studio 2017?

Question

I have just converted my PCL library to a new .Net Standard library and I have some Yellow Warning triangles on my Dependencies shown below:

During the conv

Answer 1

I faced this error when I clone the project. the main reason was the Nuget packages couldn't restore and I find a solution by making nuget.org only active resource.

Make sure you select Nuget.org as only active resource.

Hope it helps