Player.cs(56,48): error CS0117: `UnityEngine.Camera' does not contain a definition for `ScreenToWorld'

Hi gang, working out a code to make the User / player look at the mouse. think i got thsi but I’m reading an error.
// Innput Controll.
void Update () {

		// Mouse Movement
		Vector3 MousePosition = Camera.ScreenToWorld(Input.mousePosition);
		MousePosition.x = ship.transform.position.x;


No, the final thing should be like this: Camera.main.ScreenToWorldPoint(Input.MousePosition);