I have gone through

CodePudding user response：

You are trying to operate on non-property list object.

You have to follow below mentioned steps:

1. Parse your cart data from UserDefaults according to "[CartStruct]"

2. Check and delete It.

3. Update after deletion to UserDefaults

4. Reload your TableView

    func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCell.EditingStyle, forRowAt indexPath: IndexPath) {
        if editingStyle == .delete {
            cartArray = self.updateCartItems(name: cartArray[indexPath.row].cartItems.name)
            tableView.deleteRows(at: [indexPath], with: .fade)
        }
    }
   

Here, You need to check and delete:

   func updateCartItems(name: String) -> [CartStruct] {
        guard var cartItems = self.getCartData() else { return [] }
        cartItems = cartItems.filter({ $0.cartItems.name != name })
        if let updatedCart = try? PropertyListEncoder().encode(cartItems) {
            UserDefaults.standard.set(updatedCart, forKey: "cartt")
        }
        UserDefaults.standard.set(cartItems.count, forKey: "CountAddedProducts")
        return cartItems
      }