my iOS game app is not working on Devices

Question

I create a small iOS game app using SpriteKit in Xcode. It's working properly on simulators but in devices it doesn't create nodes. In code I set to create nodes dynamically, it is working On Simulator but not working On devices

On Simulator

On Devices

@objc func createRoadStrip(){
    let leftRoadStrip = SKShapeNode(rectOf: CGSize(width: 10, height: 60))
    leftRoadStrip.strokeColor = .white
    leftRoadStrip.fillColor = .white
    leftRoadStrip.position.x = -187
    leftRoadStrip.position.y =  700
    leftRoadStrip.zPosition = 10
    leftRoadStrip.alpha = 0.4
    leftRoadStrip.name = "leftRoadStrip"
    addChild(leftRoadStrip)

    let rightRoadStrip = SKShapeNode(rectOf: CGSize(width: 10, height: 60))
    rightRoadStrip.strokeColor = .white
    rightRoadStrip.fillColor = .white
    rightRoadStrip.position.x = 187
    rightRoadStrip.position.y =  700
    rightRoadStrip.zPosition = 10
    rightRoadStrip.alpha = 0.4
    rightRoadStrip.name = "rightRoadStrip"

    addChild(rightRoadStrip)

}



func moveRoadStrip(){
    enumerateChildNodes(withName: "leftRoadStrip") { (strip, stop) in
        let leftRoadStrip = strip as! SKShapeNode
        leftRoadStrip.position.y -= 40
    }

    enumerateChildNodes(withName: "rightRoadStrip") { (strip, stop) in
        let rightRoadStrip = strip as! SKShapeNode
        rightRoadStrip.position.y -= 40
    }

}

 override func update(_ currentTime: TimeInterval) {
   //here
    moveRoadStrip()
    moveTrafficCar()
    if(carCanMove){
        moveCar(toLeftSide: leftCarToMoveLeft)
        moveCar(toRightSide: rightCarToMoveRight)
    }
    removeItems()
}

I call the Timer (create road strip ) in didMove method and move the road strip in update function

 override func didMove(to view: SKView) {
    self.anchorPoint = CGPoint(x: 0.5, y: 0.5)
    physicsWorld.contactDelegate = self
    setUp()
    Timer.scheduledTimer(timeInterval: 0.2, target: self, selector: #selector(createRoadStrip), userInfo: nil, repeats: true)
}


override func update(_ currentTime: TimeInterval) {
   //here
    moveRoadStrip()
}

My device version is

• iOS: 9.0, model iPhone 6