How to enable ASP.Net Core 2.2 in Visual Studio 2017 Professional Edition
You need to install the .NET Core 2.2 SDK which you can download from https://dotnet.microsoft.com/download/dotnet-core/2.2.
It appears that you only have .NET Core 2.1 SDK installed at the moment.
Install the .net core 2.2 SDK. You can find it at https://dotnet.microsoft.com/download/dotnet-core/2.2