Welcome to Android Central forums. You haven't provided much information about your issue. Please answer the following questions to get the best advice.
Where was this shortcut, on a watch, on a phone or tablet?
What app is this short cut associated with?
Did you add the shortcut or was it pre-installed or did the app add it when you installed the app?
What updated and caused it to disappear, the app or the device?
Have you looked in your screen options menu, or tried adding a new widget? Press and hold an empty spot on your home screen until the screen settings appear OR pinch the screen to open the options page.
What device do you have? What make and model is your device?
Let us know what you find to get the best advice.