Error: Attempt to present which is already presenting

[desmeit]

I builded a native splashViewController with this tutorial:

https://medium.com/@turkergurel19/native-animated-splash-screen-with-lottie-in-flutter-21761532813b

If I try to open the MFMailComposeViewController with this package I get the following error:

Attempt to present <MFMailComposeViewController: 0x1508ed800> on <Runner.SplashViewController: 0x147f131c0> (from <Runner.SplashViewController: 0x147f131c0>) which is already presenting <FlutterViewController: 0x14a25f800>.

How could I prevent this?

To change the rootController with appDelegate.window?.rootViewController = flutterViewController is not possible because I get a black blinking between the views. present is working better.

Thanks for your help