[Bug] - when I try to connect and fetch all mail I got error.

like this: Error Domain=MCOErrorDomain Code=5 "Unable to authenticate with the current session's credentials." UserInfo={NSLocalizedDescription=Unable to authenticate with the current session's credentials.}
I put this code in my project.
class ViewController: UIViewController {

  override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view.
    prepareImapSession()
  }

  var imapsession:MCOIMAPSession = MCOIMAPSession()
  var error : Error? = nil

  func prepareImapSession()
  {
    // CONFIGURE THAT DEPENDING OF YOUR NEEDS
    imapsession.hostname = "imap.gmail.com" // String
    imapsession.username = "12345@gmail.com" // String for sample
    imapsession.password = "12345678" // String for sample
    imapsession.port = 993 // UInt32 number
    imapsession.authType = MCOAuthType.saslLogin
    imapsession.connectionType = MCOConnectionType.TLS
    DispatchQueue.main.asyncAfter(deadline: .now() + 8) { [self] in
      self.useImapWithUIDS()
    }
    imapsession.connectOperation()
  }

  func useImapWithUIDS() {
    // There is more than one option here, explore depending of your needs
//    let kind = MCOIMAPMessagesRequestKind()
//    let headers = kind.union(MCOIMAPMessagesRequestKind.headers)
//    let request = headers.union(MCOIMAPMessagesRequestKind.flags)

    let requestKind: MCOIMAPMessagesRequestKind = [.headers, .flags]
    let folder : String = "INBOX"

    // HERE ALSO EXPLORE DEPENDING OF YOUR NEEDS, RANGE IT IS THE RANGE OF THE UIDS THAT YOU WANT TO FETCH, I SUGGEST TO YOU TO CHANGE THE  // NUMBER ONE IF YOU HAVE A LOWER BOUND TO FETCH EMAIL
    let uids : MCOIndexSet = MCOIndexSet(range: MCORangeMake(1, UINT64_MAX))

    let fetchOperation  = imapsession.fetchMessagesOperation(withFolder: folder, requestKind: requestKind, uids: uids)

    fetchOperation?.start
    { [self] (err, msg, vanished) -> Void in

      if (err != nil)
      {
        self.error = err
        NSLog((err?.localizedDescription)!)
      }
      else
      {

        guard let msgs = msg as? [MCOIMAPMessage]
        else
        {
          print("ERROR GETTING THE MAILS")
          return
        }

        for i in 0..<msgs.count
        {
          // THE SUBJECT
          let subject = msgs[i].header.subject

          // THE uid for this email. The uid is unique for one email
          let uid = msgs[i].uid

          self.useImapFetchContent(uidToFetch: uid)
          // The sequenceNumber like the nomber say it is the sequence for the emails in the INBOX from the first one                                     // (sequenceNumber = 1) to the last one , it not represent always the same email. Because if you delete one email then                              //next one will get the sequence number of that email that was deleted
          let sequenceNumber = msgs[i].sequenceNumber

        }
      }
    }
  }

  // MARK: - EXTRACT THE CONTENT OF ONE EMAIL, IN THIS FUNCTION YOU NEED THE uid, THE UNIQUE NUMBER FOR ONE EMAIL
  func useImapFetchContent(uidToFetch uid: UInt32) {

    let operation: MCOIMAPFetchContentOperation = imapsession.fetchMessageOperation(withFolder: "INBOX", uid: uid)
    operation.start { (Error, data) in
      if (Error != nil)
      {
        NSLog("ERROR")
        return
      }

      let messageParser: MCOMessageParser = MCOMessageParser(data: data)

      // IF YOU HAVE ATTACHMENTS USE THIS
      let attachments = messageParser.attachments() as? [MCOAttachment]

      // THEN YOU NEED THIS PROPERTIE, IN THIS EXAMPLE I TAKE THI FIRST, USE WHAT EVER YOU WANT
      let attachData = attachments?.first?.data

      // FOR THE MESSAGEPARSER YOU CAN EPLORE MORE THAN ONE OPTION TO OBTAIN THE TEXT
      let msgPlainBody = messageParser.plainTextBodyRendering()

    }

  }
}
MailCore / mailcore2

[Bug] - when I try to connect and fetch all mail I got error. #1896
