Why can await not await?

Question

.NET

Hello.
I came across a strange behavior when using async await, the execution of the code just breaks.
Does not continue either synchronously or asynchronously. Exception'ov does not occur. Example:

public async Task<IEnumerable<MailChimpUser>> GetAllMembersAsync(string listName)
 {
  try
  {
   //Обрывается после выполнения этой строчки
   var list = await GetListByName(listName);
   
   //Причем если вместо вызова "расскрыть метод", так 
   //var lists = await _apiManager.Lists.GetAllAsync().ConfigureAwait(false);
   //list = lists.FirstOrDefault(l => l.Name == name);
   //то выполнение продолжится

   var members = await _apiManager.Members.GetAllAsync(list.Id).ConfigureAwait(false);

   var result = members.Select(m => new MailChimpUser()
   {
      ...
   });
   //то же самое здесь, после return не возвращается в метод где его эвэйтят...
   return result;
  }
  catch (Exception ex)
  {
   var logger = LogManager.GetCurrentClassLogger();

  logger.Error(ex, ex.Message, new object[] { });
    throw ex;
  }
 }

 private async Task<MailChimp.Net.Models.List> GetListByName(string name)
 {
  try
  {
    var lists = await _apiManager.Lists.GetAllAsync().ConfigureAwait(false);
    var list = lists.FirstOrDefault(l => l.Name == name);

    if (list == null)
      throw new Exception(String.Format("MailChimp: List \"{0}\" not found", name));
    return list;
  }
  catch (Exception ex)
  {
    var logger = LogManager.GetCurrentClassLogger();

    logger.Error(ex, ex.Message, new object[] { });
    throw ex;
  }
}

Tell me what's wrong and how can I fix it?

Answer 1

you need it like this:
var list = await GetListByName(listName) .ConfigureAwait(false) ;
Actually, when you "revealed", you did not forget to write .ConfigureAwait(false)
It is worth reading about ConfigureAwait and all sorts of deadlocks.