Unable to run The .NET Portability Analyzer on the Microsoft Windows Server 2016 (Datacenter)

I was assigned with the .NET Portability Analyzer scan on the Microsoft Windows Server 2016 (Datacenter)

On that datacenter we host ASP.NET Web Forms application hosted on the IIS version 10

I was told that I can download portable .NET Portability Analyzer from https://github.com/microsoft/dotnet-apiport

I did download portable version and ran this command

C:\..\ApiPort.2.8.25.Offline\ApiPort.Offline\netcoreapp3.1\ApiPort.exe analyze -r DGML -f PROJECT_DIRECTORY

I got this response

You must install or update .NET to run this application.

App: C:...\ApiPort.2.8.25.Offline\ApiPort.Offline\netcoreapp3.1\ApiPort.exe Architecture: x64 Framework: 'Microsoft.NETCore.App', version '3.1.32' (x64) .NET location: C:\Program Files\dotnet\

The following frameworks were found: 8.0.1 at [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]

Learn more: https://aka.ms/dotnet/app-launch-failed

To install missing framework, download: https://aka.ms/dotnet-core-applaunch?framework=Microsoft.NETCore.App&framework_version=3.1.32&arch=x64&rid=win-x64&os=win10

But I did install all the necessary frameworks, everything is up-to-date

Can some one suggest what is missing?