Return from Registration to login gives Nil error

[FahdSaif]

I have a login page view controller with SWreveal view controller. Everything works fine if I hit the login button and segue to my next view controller where i can see the sliding menus. However, "IF" before I hit the login button and press the registration button, on the login view controller, and "THEN" hit the login button, I get an error, found NIL while unwrapping an optional on this line:

        revealViewController().setFront(controller, animated: true)

Attached is a screen shot when the error comes.

Can you please suggest what I might be doing wrong here...I am, using the show segue when I come from the registration screen to the login screen.

The error only comes if i goto another view controller before hitting the login button.

Here is the code on the login button:

let sb = UIStoryboard(name: "Main", bundle: nil) let controller = sb.instantiateViewController(withIdentifier: "tabmain") revealViewController().setFront(controller, animated: true)

Thanks FAHD

[iDevelopper]

When you come back to login controller from registration controller don't use the show segue, but dismiss (if modal) the registration controller to come back. Or popViewController if pushed.

[FahdSaif]

Thanks a lot Patrick. That worked like a charm.