** /Applications/Visual Studio.app/Contents/MonoBundle/MSBuild/Current/bin/Microsoft.Common.CurrentVersion.targets(5,5): Error MSB3971: The reference assemblies for ".NETFramework,Version=v6.0" were not found. You might be using an older .NET SDK to target .NET 5.0 or higher. Update Visual Studio and/or your .NET SDK. (MSB3971) **
Although I have udpated the visual studio but its trowing same error again.