I am trying to add System.Threading.Timer from nuget packages since it's not already in my core project. When I do I get the following error.
You are trying to install this package ointo a project that targets '.NETPortable,Version=4.5,Profile78', but the package does not contain assembly reference or content files that are compatible with that framework.
Not sure how to resolve this issue. Could use some help on this. Thank you in advance!