.Net: Bug: Error in Polyglot Notebook using Ollama Connector

[dschilling]

Describe the bug
Notebooks that reference the Microsoft.SemanticKernel.Core and Microsoft.SemanticKernel.Connectors.Ollama nuget packages output errors when they run.

To Reproduce

Create a Polyglot Notebook with these two code blocks:

#r "nuget: Microsoft.SemanticKernel.Core, 1.34.0"
#r "nuget: Microsoft.SemanticKernel.Connectors.Ollama, 1.34.0-alpha"

using Microsoft.SemanticKernel;
using Kernel = Microsoft.SemanticKernel.Kernel;

var builder = Kernel.CreateBuilder();

#pragma warning disable SKEXP0070 // Ollama support is experimental
builder.AddOllamaChatCompletion("llama3.1:8b-instruct-q2_K", new Uri("http://localhost:11434"));
#pragma warning restore SKEXP0070 // Ollama support is experimental

var kernel = builder.Build();
Console.WriteLine("It worked!");
Console.WriteLine(kernel);

Run the code blocks. It produces this output:

Error: System.IO.FileNotFoundException: Could not load file or assembly 'Microsoft.Extensions.DependencyInjection.Abstractions, Version=9.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60'. The system cannot find the file specified.
File name: 'Microsoft.Extensions.DependencyInjection.Abstractions, Version=9.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60'
at Microsoft.SemanticKernel.OllamaKernelBuilderExtensions.AddOllamaChatCompletion(IKernelBuilder builder, String modelId, Uri endpoint, String serviceId)
at Submission#1.<<Initialize>>d__0.MoveNext()
--- End of stack trace from previous location ---
at Microsoft.CodeAnalysis.Scripting.ScriptExecutionState.RunSubmissionsAsync[TResult](ImmutableArray`1 precedingExecutors, Func`2 currentExecutor, StrongBox`1 exceptionHolderOpt, Func`2 catchExceptionOpt, CancellationToken cancellationToken)

Expected behavior
I expected it to output:

It worked!
Microsoft.SemanticKernel.Kernel

... which is what happens if you create a .NET 8 Console App with the same two nuget packages and that C# code.

Platform

• Language: [C#]
• Source: [NuGet package version 1.34.0]
• AI model: [llama3.1:8b-instruct-q2_K]
• IDE: [VS Code with Polyglot Notebooks extension]
• OS: [Windows 11]

Additional context
I have cross posted this issue with the Polyglot Notebooks team. dotnet/interactive#3823

[jonsequitur]

.NET Interactive now requires the .NET 9 SDK.

[rogerbarreto]

Ensure you add the 9.0.0 dependency injection first. Ollama Connector depends on Microsoft.Extensions.AI which has a hard dependency on Microsoft.Extensions.DependencyInjection 9.0.0.

To fix, you need to restart your kernel and add the 9.0.0 explicitly as the first package.

#r "nuget: Microsoft.Extensions.DependencyInjection, 9.0.0"
#r "nuget: Microsoft.SemanticKernel.Core, 1.35.0"
#r "nuget: Microsoft.SemanticKernel.Connectors.Ollama, 1.35.0-alpha"

using Microsoft.SemanticKernel;
using Kernel = Microsoft.SemanticKernel.Kernel;

var builder = Kernel.CreateBuilder();

#pragma warning disable SKEXP0070 // Ollama support is experimental
builder.AddOllamaChatCompletion("llama3.1:8b-instruct-q2_K", new Uri("http://localhost:11434"));
#pragma warning restore SKEXP0070 // Ollama support is experimental

var kernel = builder.Build();
Console.WriteLine("It worked!");
Console.WriteLine(kernel);

[dschilling]

Thanks! After installing the .NET 9 SDK and upgrading to the latest version of the Polyglot Notebooks extension, it is now working. Upgrading the extension was weird. I upgraded, but #!about still said I had the old version, and the Ollama connector still wouldn't work - same ...DependencyInjection.Abstractions, Version=9.0.0.0 error as before. I had to uninstall the extension and reinstall it, and then after that everything was happy.

[jonsequitur]

@dschilling This is a known issue (#3757). Until it's fixed, a restart of VS Code should be sufficient to trigger the download of the latest dotnet-interactive tool.