在Swift中，我有2个导航栏，但想要隐藏其中一个，怎么做？

I currently have a viewcontroller that has two navigation bars because Its has a navigation controller both before and after a tab bar controller. I tried to have it so that the viewcontroller before the tab bar controller will present modally but by dong so the 2nd nav bar didn't work properly. The 2nd nav bar is a custom side menu that only appears to work if the first navigation controller is preset. Here is a picI currently have a viewcontroller that has two