                           titleColor: UIColor?,
                           messageColor: UIColor?,
                           font: UIFont?) {
-        let toastView = self.toastView(message: message,
-                                       title: title,
-                                       image: nil,
-                                       backgroundColor: backgroundColor,
-                                       titleColor: titleColor,
-                                       messageColor: messageColor,
-                                       font: font)
+        guard let toastView = self.toastView(message: message,
+                                             title: title,
+                                             image: nil,
+                                             backgroundColor: backgroundColor,
+                                             titleColor: titleColor,
+                                             messageColor: messageColor,
+                                             font: font) else {
+                                                return
+        }
         self.showToast(toastView: toastView,
                        fadeIn: fadeIn,
                        duration: duration,

                          titleColor: UIColor?,
                          messageColor: UIColor?,
                          font: UIFont?) {
        let toastView = self.toastView(message: message,
                                       title: "",
                                       image: image,
                                       backgroundColor: backgroundColor,
                                       titleColor: titleColor,
                                       messageColor: messageColor,
                                       font: font)
        self.showToast(toastView: toastView,
                       fadeIn: fadeIn,
                       duration: duration,

      - parameter duration: The time duration toast will displayed on the screen
      - parameter position: The position that toast will displayed
     */
    fileprivate func createAndShowToast(toastView: UIView,
                                        fadeIn: TimeInterval,
                                        duration: TimeInterval!,
                                        position: ToastPosition,
                                        point: CGPoint) {
        toastView.center = point.equalTo(CGPoint.zero) ? centerPointForPosition(position: position, toastView: toastView) : point
        toastView.alpha = Constants.ToastViewAlpha

