Error message : eye tracking

Hi !
I’m a big beginner, and I would like to create a lift going up and down. Nothing happens when I try to make it work, i have :
Could not find a device that supports eye tracking on Awake. Gaze Interactor (UnityEngine.XR.Interaction.Toolkit.Samples.StarterAssets.GazeInputManager) has subscribed to device connected events and will activate the GameObject when an eye tracking device is connected.
UnityEngine.XR.Interaction.Toolkit.Samples.StarterAssets.GazeInputManager:Awake () (at Assets/Samples/XR Interaction

What can I do ? Thanks !!!