I tried to add a new Class library(.Net Standard) in Visual studio 2019. But I get this error message:
Unable to find package NETStandard.Library. No packages exist withthis id in source(s): Microsoft Visual Studio Offline Packages.
I haven't added any code to this file yet. When I go to NugetManager I can see this message:
NetStandard.Library not available at this source
Can anyone please help me with this issue?