Element Type is invalid: expected a string (for built-in components) but got: undefined. You likely forgot to export your component from the file it's defined in. Check the render method of `ExNavigationTabBar`

Hello, I’m having this error a long time ago using ex-navigation.
I don’t have that ExNavigationTabBar in my code

<img src="//expo-discourse-uploads.s3-us-west-1.amazonaws.com/original/2X/8/8cd70fb571b7b8bdc5bdbb4f421118970863d7b7.png" width=“643” height=“500”

Hi! Unfortunately we’re not able to provide support here for ex-navigator. See https://github.com/expo/ex-navigation#an-important-note-about-the-future for details. In the near future we’ll be providing a template project using react-navigation!