Error doing RoundRobinGroupChat with Anthropic Agent

[drewid]

I believe I have things properly setup, it's extremely similar to current examples but keep getting the following error no matter what I do. Can't make sense of the error.

Anyone have ideas on how to resolve the issue? Line 207 is the line that starts with "var groupChatHistory"

Unhandled exception. System.InvalidOperationException: The message is not a valid message
   at AutoGen.Core.PrintMessageMiddleware.InvokeAsync(MiddlewareContext context, IStreamingAgent agent, CancellationToken cancellationToken)+MoveNext()
   at AutoGen.Core.PrintMessageMiddleware.InvokeAsync(MiddlewareContext context, IStreamingAgent agent, CancellationToken cancellationToken)+System.Threading.Tasks.Sources.IValueTaskSource<System.Boolean>.GetResult()
   at AutoGen.Core.PrintMessageMiddleware.InvokeAsync(MiddlewareContext context, IAgent agent, CancellationToken cancellationToken)
   at AutoGen.Core.PrintMessageMiddleware.InvokeAsync(MiddlewareContext context, IAgent agent, CancellationToken cancellationToken)
   at AutoGen.Core.GroupChat.CallAsync(IEnumerable'1 chatHistory, Int32 maxRound, CancellationToken ct)
   at AutoGen.Core.GroupChatExtension.SendAsync(IGroupChat groupChat, IEnumerable'1 chatHistory, Int32 maxRound, CancellationToken cancellationToken)+MoveNext()
   at AutoGen.Core.GroupChatExtension.SendAsync(IGroupChat groupChat, IEnumerable'1 chatHistory, Int32 maxRound, CancellationToken cancellationToken)+System.Threading.Tasks.Sources.IValueTaskSource<System.Boolean>.GetResult()
   at AutoGen.Core.AgentExtension.InitiateChatAsync(IAgent agent, IAgent receiver, String message, Int32 maxRound, CancellationToken ct)
   at AutoGen.Core.AgentExtension.InitiateChatAsync(IAgent agent, IAgent receiver, String message, Int32 maxRound, CancellationToken ct)
   at Program.<Main>$(String[] args) in D:\source\repos\GitHub\xyz\ChatApp\Program.cs:line 207
   at Program.<Main>(String[] args)
ChapApp.exe (process 44792) exited with code -532462766 (0xe0434352).

Relevant Code:

var anthropicClient = new AnthropicClient(new HttpClient(), baseUrl, key);
var anthropicAgent = new AnthropicClientAgent(anthropicClient, "Assistant", model);

var anthropicClientAgent = anthropicAgent
    .RegisterMessageConnector()
    .RegisterPrintMessage();

var userProxyAgent = new UserProxyAgent(
    name: "User",
    humanInputMode: HumanInputMode.ALWAYS)
.RegisterPrintMessage();

var groupChat = new RoundRobinGroupChat(
    agents: [anthropicClientAgent, userProxyAgent]);

var groupChatAgent = new GroupChatManager(groupChat);

var groupChatHistory = await userProxyAgent.InitiateChatAsync(
    receiver: groupChatAgent,
    message: "How to deploy an openai resource on azure",
    maxRound: 10);

[ekzhu]

@LittleLittleCloud for help