input message bar not appearing

[Zulqurnain24]

input message bar not appearing when we make ChatViewController from messagekit(https://github.com/MessageKit/MessageKit) as detailview in splitviewcontroller

I am using this code:
tabBarSplitViewController?.showDetailViewController(basicExampleViewController, sender: .none)

where basicExampleViewController is inherting from ChatViewController
Your help will be truly appreciated. Thanks