BuggyViewController.swift

//navigate within same module
func navigateToPayment() {
      let storyboard = UIStoryboard(name: "Transactions", bundle: nil)
      if let controller = storyboard.instantiateViewController(withIdentifier: "PaymentViewController") as? PaymentViewController {
          self.navigationController.pushViewController(controller, animated: true)
      }
  }

//navigate to different module
func navigateToPortfolioDashboard() {
    let portfolioModule = Bundle(for: DashboardViewController.self)
    let storyboard = UIStoryboard(name: "Dashboard", bundle: portfolioModule)
    
    if let viewController = storyboard.instantiateViewController(withIdentifier: "DashboardViewController") as? DashboardViewController {
      self.navigationController?.pushViewController(viewController, animated: true)
    }
}