I am getting crash for some iOS 15 devices like iPhone 12, 12 Mini & 13. Here are the codes that I wrote to load child view controller DispatchQueue.main.async { self.addDetailVC() } } private func addDetailVC(){ let childVC = AppStoryboard.Menu.viewController(viewControllerClass: RestaurantProductListViewController.self) childVC.viewAnimationMode = .modal childVC.viewModel = self.viewModel self.addChild(childVC) childVC.view.roundCorners([.topLeft, .topRight], radius: 20) childVC.view.translatesAutoresizingMaskIntoConstraints = false self.restaurantDetailsContainerView.addSubview(childVC.view) NSLayoutConstraint.activate([ childVC.view.leadingAnchor.constraint(equalTo: restaurantDetailsContainerView.leadingAnchor), childVC.view.trailingAnchor.constraint(equalTo: restaurantDetailsContainerView.trailingAnchor), childVC.view.topAnchor.constraint(equalTo: restaurantDetailsContainerView.topAnchor), childVC.view.bottomAnchor.constraint(equalTo: restaurantDetailsContainerView.bottomAnchor) ]) let org = childVC.view.frame.origin childVC.view.frame.origin = CGPoint(x: childVC.view.frame.origin.x, y: self.restaurantDetailsContainerView.frame.height) childVC.view.layoutIfNeeded() UIView.animate(withDuration: 0.8, delay: 0, options: .transitionFlipFromBottom, animations: { childVC.view.frame.origin = org childVC.scrollDelegate = self self.searchBarForDishes.delegate = childVC childVC.updateUI() }) { (finished) in self.view.layoutIfNeeded() childVC.didMove(toParent: self) self.restaurantProductsChildVC = childVC Cart.delegate = self.restaurantProductsChildVC } } In Child View controller func updateUI() { self.loadDataAndUpdateUI() } private func loadDataAndUpdateUI(){ if let restaurantData = self.viewModel.restaurantDetails{ self.restaurantNameLabel.text = restaurantData.name if let categories = restaurantData.categories, categories.count > 0 { self.tableView.dataSource = self } } } Please find the attached crash report I got. Crash Report Anyone please help me in finding what is wrong with my code! Thank You!