Inconsistency Exception

[minaMagedNaeem]

I used it like the guide in the Readme file and this exception occured when I dismiss the view controller

'NSInternalInconsistencyException', reason: 'Cannot modify constraints for UINavigationBar managed by a controller'

Please note that I have a hidden navigation bar and i present the instagramLoginVC like this:

present(UINavigationController(rootViewController: instagramLogin), animated: true)

[minaMagedNaeem]

I figured this out
please remove this line from the viewWillDissappear function

if let progressView = progressView { progressView.removeFromSuperview() }