Literally just started coding in c#, having error cs1729

I copied the example script exactly, but it isn't working. I know I'm a noob, but can you please help? The error is saying:Assets/Scripts/PlayerController.cs(11,83): error CS1729: The type UnityEngine.Vector3' does not contain a constructor that takes 4' arguments

 using UnityEngine;
 using System.Collections;
 
 public class PlayerController : MonoBehaviour 
 {
     void FixedUpdate ()
     {
         float moveHorizontal = Input.GetAxis("Horizontal");
         float moveVertical = Input.GetAxis("Vertical");
 
         Vector3 movement = new Vector3(moveHorizontal, 0,0f, moveVertical);
 
         rigidbody.AddForce(movement);
     }
 }