private func showWarningView() {
		
		DispatchQueue.main.async { [weak self] in
			
			guard let self = self else { return }
			
			var newConstant: CGFloat!
			
			if self.warningViewTopConstraint.constant == 0.0 {
				newConstant = 100.0
			} else {
				newConstant = 0.0
			}
			
			self.warningViewTopConstraint.constant = newConstant
			
			UIView.animate(withDuration: 0.25, delay: 0.0, options: .curveEaseIn, animations: { [weak self] in
				guard let self = self else { return }
				self.view.layoutIfNeeded()
			}, completion: nil)
			
		}
		
	}