Script error

I keep on getting this error in my script (UnityEngine.Component.GetComponent(System.Type)' cannot be used with the type arguments) what seems to be the problem with my script,Thanks

 using UnityEngine;
 using System.Collections;
 
 public class PlayerMovement : MonoBehaviour {
     public float movespeed;
 
     private Vector3 input;
 
     // Use this for initialization
     void Start () {
     
     }
     
     // Update is called once per frame
     void Update () {
         input = new Vector3 (Input.GetAxis ("Horizontal"), 0, Input.GetAxis ("Vertical"));
         GetComponent<Rigidbody> (input).AddForce (movespeed);
     }