Pls Help Me :(

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. [RequireComponent(typeof(PlayerMotor))]
5. public class PlayerController : MonoBehaviour {
6.  
7.     [SerializeField]
8.     private float speed = 5f;
9.  
10.     private PlayerMotor motor;
11.  
12.     void start ()
13.     {
14.         motor = GetComponent<PlayerMotor>();
15.     }
16.  
17.     void Update ()
18.     {
19.         /*Calculate movement velocity as a 3D vector*/
20.         float _xMov = Input.GetAxisRaw("Horizontal");
21.         float _zMov = Input.GetAxisRaw("Vertical");
22.  
23.         Vector3 _movHorizontal = transform.right * _xMov;
24.         Vector3 _movVertical = transform.forward * _zMov;
25.  
26.         /*Final movement vector*/
27.         Vector3 _velocity = (_movHorizontal + _movVertical).normalized * speed;
28.  
29.         /*Apply movement*/
30.         motor.Move(_velocity);
31.     }
32. }
33.  

The error Says : NullReferenceException: Object reference not set to an instance of an object
PlayerController.Update () (at Assets/PlayerController.cs:29)

 

Pls Help ME

 

Try replacing start with Start. The compiler cares a lot about capital letters in the right place.