{
  "sdk": {
    "version": "3.1.202",
    "allowPrerelease": false,
    "rollForward": "latestMajor"
  }
}

{
  "sdk": {
    "version": "3.1.300",
    "allowPrerelease": false,
    "rollForward": "latestMajor"
  }
}

Update to .NET Core 3.1.300 SDK
Update to .NET Core 3.1.300 SDK

Update to the .NET Core 3.1 SDK for Visual Studio 2019 16.6.