.NET: [Bug]: Provided Human in the loop sample does not seem to work anymore with RC1

[rwjdk]

Description

In the repo, you have https://github.com/microsoft/agent-framework/tree/main/dotnet/samples/GettingStarted/Workflows/HumanInTheLoop/HumanInTheLoopBasic

Which is a Human in the Loop sample... This seems not to work anymore with RC1 (If you guess a number, the sample just ends with no feedback or giving user the option to retry)

I also have a similar Sample here: https://github.com/rwjdk/MicrosoftAgentFrameworkSamples/blob/main/src/Workflow.HumanInTheLoop/Program.cs , and there I just get a very un-descriptive error of

System.InvalidOperationException: 'Executor 'Evaluator and Hint-giver' cannot send messages of type 'FeedbackToUser'.'

when run... This sample worked flawlessly pre RC1

Any hints as to what is going on here?

Code Sample

Error Messages / Stack Traces

Package Versions

RC1

.NET Version

.NET10

Additional Context

No response

[codehunter13]

think i got the same error in my application. Also worked previously (with the change i converted it to the [MessageHandler] way).

System.InvalidOperationException: Executor 'CodeGenerationOrchestrator' cannot send messages of type 'GSL.Dev.Agents.Executors.CodeGeneration.ReviewRequest'.
   at Microsoft.Agents.AI.Workflows.InProc.InProcessRunnerContext.SendMessageAsync(String sourceId, Object message, String targetId, CancellationToken cancellationToken)
   at GSL.Dev.Agents.Executors.CodeGeneration.CodeGenerationOrchestrator.HandleAsync(TestGenerationResult testResult, IWorkflowContext context, CancellationToken cancellationToken) in D:\projects\CodingAgent\GSL.Dev.Agents\Executors\CodeGeneration\CodeGenerationOrchestrator.cs:line 117
   at Microsoft.Agents.AI.Workflows.RouteBuilder.<>c__DisplayClass12_0`1.<<AddHandler>g__WrappedHandlerAsync|0>d.MoveNext()
--- End of stack trace from previous location ---
   at Microsoft.Agents.AI.Workflows.Execution.MessageRouter.RouteMessageAsync(Object message, IWorkflowContext context, Boolean requireRoute, CancellationToken cancellationToken)

[rogeriorfp]

Description

In the repo, you have https://github.com/microsoft/agent-framework/tree/main/dotnet/samples/GettingStarted/Workflows/HumanInTheLoop/HumanInTheLoopBasic

Which is a Human in the Loop sample... This seems not to work anymore with RC1 (If you guess a number, the sample just ends with no feedback or giving user the option to retry)

I also have a similar Sample here: https://github.com/rwjdk/MicrosoftAgentFrameworkSamples/blob/main/src/Workflow.HumanInTheLoop/Program.cs , and there I just get a very un-descriptive error of

System.InvalidOperationException: 'Executor 'Evaluator and Hint-giver' cannot send messages of type 'FeedbackToUser'.'

when run... This sample worked flawlessly pre RC1

Any hints as to what is going on here?

Code Sample

Error Messages / Stack Traces

Package Versions

RC1

.NET Version

.NET10

Additional Context

No response

For the first example, you can fix it by adding the attributes [YieldsOutput(typeof(string))] and [SendsMessage(typeof(NumberSignal))] to the JudgeExecutor class. For the second example, I haven’t tested it, but since it’s the same error, I believe adding the attributes [YieldsOutput(typeof(string))] and [SendsMessage(typeof(FeedbackToUser))] to the EvaluateAndHintExecutor class should resolve it.

[YieldsOutput(typeof(string))]
[SendsMessage(typeof(NumberSignal))]
internal sealed class JudgeExecutor() : Executor<int>("Judge")
{
...
}

[rwjdk]

Thanks... That works 🙌.

Is what we just did a workaround or a mandatory part of workflow now (I did not see anything like this mentioned in any documentation)

[rogeriorfp]

I’m not sure. I tried it after noticing the presence of another attribute, [MessageHandler], in a different example and I also didn’t see anything in the documentation.

[rogeriorfp]

I believe this will become mandatory based on pull request #3792.