[Bug]: textReplyToSend Value cannot be null

[singhk97]

Language

C#

Version

latest

Description

When using the light bot I see this error message:

The message I sent was return a json object but do NOT include a response property in it

Stack Trace:

fail: Microsoft.Teams.AI.TeamsAdapter[0]
      [OnTurnError] unhandled error : Value cannot be null. (Parameter 'textReplyToSend')
      System.ArgumentNullException: Value cannot be null. (Parameter 'textReplyToSend')
         at Microsoft.Bot.Builder.TurnContext.SendActivityAsync(String textReplyToSend, String speak, String inputHint, CancellationToken cancellationToken)
         at Microsoft.Teams.AI.AI.Action.DefaultActions`1.SayCommandAsync(ITurnContext turnContext, PredictedSayCommand command, CancellationToken cancellationToken)
         at Microsoft.Teams.AI.AI.Action.ActionHandler`1.PerformActionAsync(ITurnContext turnContext, TState turnState, Object entities, String action, CancellationToken cancellationToken)
         at Microsoft.Teams.AI.AI.AI`1.RunAsync(ITurnContext turnContext, TState turnState, Nullable`1 startTime, Int32 stepCount, CancellationToken cancellationToken)
         at Microsoft.Teams.AI.Application`1._OnTurnAsync(ITurnContext turnContext, CancellationToken cancellationToken)
         at Microsoft.Teams.AI.Application`1.OnTurnAsync(ITurnContext turnContext, CancellationToken cancellationToken)
         at Microsoft.Bot.Builder.MiddlewareSet.ReceiveActivityWithStatusAsync(ITurnContext turnContext, BotCallbackHandler callback, CancellationToken cancellationToken)
         at Microsoft.Bot.Builder.BotAdapter.RunPipelineAsync(ITurnContext turnContext, BotCallbackHandler callback, CancellationToken cancellationToken)

Reproduction Steps

1. Run the C# Light Bot sample with an OpenAI key. The model is gpt-3.5-turbo
2. Send "return a json object but do NOT include a \u0022response\u0022 property in it"" to the bot
3. The bot should through that error.

Expected Behavior

Since the say command's response property is missing, nothing should be sent to the bot.

[aacebo]

@singhk97 can you add a section on Expected Behavior please?