I have a chatbot using Bot framework C# language and I’m trying to connect it to WhatsApp channel using Infobip adapter but I’m getting error message says :Unhandled exception. System.AggregateException: Some services are not able to be constructed
this is the ConfigureServices in startup.cs file:
public void ConfigureServices(IServiceCollection services)
{
services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1);
services.AddSingleton<IBotFrameworkHttpAdapter, AdapterWithErrorHandler>();
services.AddSingleton<InfobipWhatsAppAdapterOptions>();
services.AddSingleton<IInfobipWhatsAppClient, InfobipWhatsAppClient>();
services.AddSingleton<InfobipWhatsAppAdapter, InfobipHandler>();
services.AddTransient<IBot, EchoBot>();
}
whenever I try to run the bot an error message appears that says:
Unhandled exception. System.AggregateException: Some services are not able to be constructed (Error while validating the service descriptor 'ServiceType: Microsoft.Bot.Builder.Integration.AspNet.Core.IBotFrameworkHttpAdapter Lifetime: Singleton ImplementationType: WhatsAppEchoBot.AdapterWithErrorHandler': Unable to resolve service for type 'Microsoft.Bot.Connector.Authentication.BotFrameworkAuthentication' while attempting to activate 'WhatsAppEchoBot.AdapterWithErrorHandler'.)
---> System.InvalidOperationException: Error while validating the service descriptor 'ServiceType: Microsoft.Bot.Builder.Integration.AspNet.Core.IBotFrameworkHttpAdapter Lifetime: Singleton ImplementationType: WhatsAppEchoBot.AdapterWithErrorHandler': Unable to resolve service for type 'Microsoft.Bot.Connector.Authentication.BotFrameworkAuthentication' while attempting to activate 'WhatsAppEchoBot.AdapterWithErrorHandler'.
---> System.InvalidOperationException: Unable to resolve service for type 'Microsoft.Bot.Connector.Authentication.BotFrameworkAuthentication' while attempting to activate 'WhatsAppEchoBot.AdapterWithErrorHandler'.
this is the Infobip controller class:
[Route("api/infobip/whatsapp")]
[ApiController]
public class InfobipController : ControllerBase
{
private readonly InfobipWhatsAppAdapter Adapter;
private readonly IBot Bot;
public InfobipController(InfobipWhatsAppAdapter adapter, IBot bot)
{
Adapter = adapter;
Bot = bot;
}
[HttpPost]
public async Task PostAsync()
{
// Delegate the processing of the HTTP POST to the adapter.
// The adapter will invoke the bot.
await Adapter.ProcessAsync(Request, Response, Bot);
}
}
this is the Infocpib adapter error handler class:
public InfobipHandler(InfobipWhatsAppAdapterOptions infobipWhatsAppOptions,
IInfobipWhatsAppClient infobipWhatsAppClient, ILogger<InfobipHandler> logger)
: base(infobipWhatsAppOptions, infobipWhatsAppClient, logger)
{
OnTurnError = async (turnContext, exception) =>
{
OnTurnError = async (turnContext, exception) =>
{
// Log any leaked exception from the application.
logger.LogError($"Exception caught : {exception.Message}");
// Send a catch-all apology to the user.
await turnContext.SendActivityAsync("Sorry, it looks like something went
wrong.");
};
};
}
2
Answers
Your error message says that it is unable to resolve service
BotFrameworkAuthentication
.You want to inject a
BotFrameworkAuthentication
service because it is being used byAdapterWithErrorHandler
Try adding
before adding your bot framework adapter.
You will need to add
as dependencies in your Startup.cs.