System.InvalidOperationException on trying get mime message. about mailkitsimplified HOT 11 CLOSED

// Don't do this in real code! Use Dependancy Injection instead.
using var imapReceiver1 = ImapReceiver.Create("imapHost:imapPort")
    .SetCredential("login", "applicationPassword");
using var imapReceiver2 = ImapReceiver.Create("imapHost:imapPort")
    .SetCredential("login", "applicationPassword");

await imapReceiver1.MonitorFolder
   .SetIgnoreExistingMailOnConnect(false)
   .OnMessageArrival(OnArrivalAsync)
   .IdleAsync(cancellationToken);

async Task OnArrivalAsync(IMessageSummary messageSummary)
{
    try
    {
        Console.WriteLine($"{imapReceiver1} message #{messageSummary.UniqueId} arrived.");
        var mimeMessage = await imapReceiver2.ReadMail.GetMimeMessageAsync(messageSummary.UniqueId);
    }
    catch (Exception ex)
    {
        Console.WriteLine(ex, ex.Message);
    }
}

await _mailFolderMonitor
   .OnMessageArrival(OnArrivalAsync)
   .IdleAsync(cancellationToken);

async Task OnArrivalAsync(IMessageSummary messageSummary)
{
    try
    {
        _logger.LogInformation($"{_imapReceiver} message #{messageSummary.UniqueId} arrived.");
        var mimeMessage = await _imapReceiver.ReadMail.GetMimeMessageAsync(messageSummary.UniqueId);
    }
    catch (Exception ex)
    {
        _logger.LogError(ex, ex.Message);
    }
}

async Task FetchMessageSummariesAsync(bool print)
{
    IList<IMessageSummary> fetched;

    do
    {
        try
        {
            // fetch summary information for messages that we don't already have
            int startIndex = messages.Count;

            fetched = client.Inbox.Fetch(startIndex, -1, request, cancel.Token);
            break;
        }
        catch (ImapProtocolException)
        {
            // protocol exceptions often result in the client getting disconnected
            await ReconnectAsync();
        }
        catch (IOException)
        {
            // I/O exceptions always result in the client getting disconnected
            await ReconnectAsync();
        }
    } while (true);

    foreach (var message in fetched)
    {
        if (print)
        {
            var mimeMessage = await client.Inbox.GetMessageAsync(message.UniqueId);
            Console.WriteLine("{0}: new message: {1}", client.Inbox, mimeMessage.TextBody);
        }
        messages.Add(message);
    }
}