使用C#调用Graph API获取租户会议室时出现NotAcceptable错误

我用C#调用Microsoft Graph API获取租户内所有会议室列表时，遇到了NotAcceptable错误。Graph Service Client配置正常，能成功获取用户列表，但获取会议室时返回UnknownError。我参考微软官方文档实现了代码，以下是相关代码片段、权限配置和错误堆栈：

创建Graph客户端及获取会议室代码 #

public GraphServiceClient CreateGraphClient()
{
    var scopes = new[] { "https://graph.microsoft.com/.default" };
    var options = new TokenCredentialOptions
    {
        AuthorityHost = AzureAuthorityHosts.AzurePublicCloud
    };

    var clientSecretCredential = new ClientSecretCredential(
        tenantId, clientId, clientSecret, options);

    return new GraphServiceClient(clientSecretCredential, scopes);
}

public async Task<List<string>> GetRoomsAsync()
{
    var rooms = await graphClient.Places.Request().GetAsync();

    var roomsList = new List<string>();

    foreach (var room in rooms)
    {
        Console.WriteLine(room.DisplayName);
        roomsList.Add(room.DisplayName);
    }
    return roomsList;
}

可正常运行的获取用户代码 #

public async Task<List<string>> GetUsersAsync()
{
    var users = await graphClient.Users.Request().GetAsync();
    var user_list = new List<string>();

    foreach (var user in users)
    {
        user_list.Add(user.DisplayName);
    }

    return user_list;
}

Azure AD权限配置 #

错误堆栈信息 #

An unhandled exception has occurred while executing the request.
Status Code: NotAcceptable
Microsoft.Graph.ServiceException: Code: UnknownError
Inner error:
  AdditionalData:
  date: 2022-09-11T12:06:02
  request-id: 1d5d8c56-235c-452d-aa2c-9d71cbf2d7a9
  client-request-id: 1d5d8c56-235c-452d-aa2c-9d71cbf2d7a9
ClientRequestId: 1d5d8c56-235c-452d-aa2c-9d71cbf2d7a9

   at Microsoft.Graph.HttpProvider.SendAsync(HttpRequestMessage request, HttpCompletionOption completionOption, CancellationToken cancellationToken)
   at Microsoft.Graph.BaseRequest.SendRequestAsync(Object serializableObject, CancellationToken cancellationToken, HttpCompletionOption completionOption)
   at Microsoft.Graph.BaseRequest.SendAsync[T](Object serializableObject, CancellationToken cancellationToken, HttpCompletionOption completionOption)
   at Microsoft.Graph.GraphServicePlacesCollectionRequest.GetAsync(CancellationToken cancellationToken)
   at PicoWebAPI.Controllers.MeetingsController.Get() in C:\Users\Blue\source\repos\MeetingRoomBooking\PicoWebAPI\Controllers\MeetingsController.cs:line 25
   at lambda_method5(Closure , Object )
   at Microsoft.AspNetCore.Mvc.Infrastructure.ActionMethodExecutor.AwaitableObjectResultExecutor.Execute(IActionResultTypeMapper mapper, ObjectMethodExecutor executor, Object controller, Object[] arguments)
   at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<InvokeActionMethodAsync>g__Awaited|12_0(ControllerActionInvoker invoker, ValueTask`1 actionResultValueTask)
   at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<InvokeNextActionFilterAsync>g__Awaited|10_0(ControllerActionInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
   at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Rethrow(ActionExecutedContextSealed context)
   at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
   at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<InvokeInnerFilterAsync>g__Awaited|13_0(ControllerActionInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
   at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeFilterPipelineAsync>g__Awaited|20_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
   at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeAsync>g__Awaited|17_0(ResourceInvoker invoker, Task task, IDisposable scope)
   at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeAsync>g__Awaited|17_0(ResourceInvoker invoker, Task task, IDisposable scope)
   at Microsoft.AspNetCore.Routing.EndpointMiddleware.<Invoke>g__AwaitRequestTask|6_0(Endpoint endpoint, Task requestTask, ILogger logger)
   at Microsoft.AspNetCore.Authorization.AuthorizationMiddleware.Invoke(HttpContext context)
   at Swashbuckle.AspNetCore.SwaggerUI.SwaggerUIMiddleware.Invoke(HttpContext httpContext)
   at Swashbuckle.AspNetCore.Swagger.SwaggerMiddleware.Invoke(HttpContext httpContext, ISwaggerProvider swaggerProvider)
   at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context)

内容的提问来源于stack exchange，提问作者Baxorr