Make sure you have the latest version of the Construct 3 plug-in from here: https://www.construct.net/en/make-games/addons/192/spriter
Here is a video for installing the plug-in of you don't know how.
You can then watch the video below to see how to export your project from Spriter and then import it into Construct 3.
You can repeat this process whenever you need to update your Spriter project in your game. Meaning, if you change or add animations, images, sounds etc