Unable to simultaneously satisfy constraints

Try this steps, it helps me.

Select your object > Editor > Resolve Auto Layout Issues > Reset to Suggested Constraints

I had the same problem, after hours of searching, it turned out the problem was because in-call or hotspot status bar was toggled, (hotspot is on, in a phone call), to fix the problem, in appdelegate I added:

    func application(application: UIApplication, willChangeStatusBarFrame newStatusBarFrame: CGRect) {
    let windows = UIApplication.sharedApplication().windows

    for window in windows {
        window.removeConstraints(window.constraints)
    }
}

The error is what it says, and gives quite clear instructions for you to begin debugging. There are two constraints that conflict. Each instructs the Auto Layout runtime to do something that contradicts the other.

If you are creating and adding views programmatically, then chances are Auto Resizing attributes have been automatically translated to Auto Layout constraints.

So, the first thing to try is, with your programmatically created views, disable this by setting:

myProgrammaticView.translatesAutoresizingMaskIntoConstraints = NO;