Why is there an error when using BlueSwift?

Question

Swift

I use the BlueSwift library to work with BLE.
Copied the example. Does not work. When trying to connect to the device - throws an error.

Source:

//
//  ViewController.swift
//  ESP32_BLE
//
//  Created by Victor on 14.11.2019.
//  Copyright © 2019 Snufkin52. All rights reserved.
//

import UIKit
import BlueSwift



class ViewController: UIViewController {
    
    
    override func viewDidLoad() {
        super.viewDidLoad()
    }
    
    let connection = BluetoothConnection.shared
    
    private var loading = false;
    
    lazy var characteristic = try! Characteristic(uuid: "cc46b944-003e-42b6-b836-c4246b8f19a0", shouldObserveNotification: true)
    
    
      lazy var service = try! Service(uuid: "9a8ca9ef-e43f-4157-9fee-c37a3d7dc12d", characteristics: [characteristic])
    
    
    lazy var peripheral: Peripheral<Connectable> = {
        let configuration = try! Configuration(services: [service], advertisement: "1004FD87-820F-438A-B757-7AC2C15C2D56")
        return Peripheral(configuration: configuration)
    }()
    

    @IBAction func connect(_ sender: Any) {
        
        connection.connect(peripheral) { [weak self] _ in
        self?.loading = false
           }
    }
    @IBAction func write()
{
    let command = Command.utf8String("HELLO")
    peripheral.write(command: command, characteristic: characteristic) { error in
        print("Did write")
    }
}
    

    
}