"NullRefenenceException: Object reference not set to an instance of an object"

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1

So I’m trying to make it when your character stands on a certain thing, in this case a yellow pad with the tag jumpboost, your character gets some affect. There isn’t any syntax error but when I start the game it spams in the console “NullReferenceException: Object reference not set to an instance of an object PlayerMotor.GiveJumpBoost () (at Assets/Scripts/PlayerMotor.cs:66)” Can anyone help me? The error is on line 66.

using UnityEngine;
using System.Collections;

[RequireComponent(typeof(Rigidbody))]
[RequireComponent(typeof(GameObject))]
public class PlayerMotor : MonoBehaviour {

    private Vector3 velocity = Vector3.zero;

    [SerializeField]
    private float jumpSpeed = 8f;

    public float jumpBoostStrength = 10f;
    public float speedBoostStregth = 8f;

    private Rigidbody rb;

    void Start()
    {
        rb = GetComponent<Rigidbody>();
    }
    //Gets a movement vector
    public void Move(Vector3 _velocity)
    {
        velocity = _velocity;
    }

    //Run every physics iteration
    private void FixedUpdate()
    {
        PerformMovement();
        PerformJump();
        GiveJumpBoost();
    }

    //Perform movement based on velocity variable
    void PerformMovement()
    {
        if (velocity != Vector3.zero)                                   //Time.fixedDeltaTime is the time between each frame
        {                                                               //This prevents someone from moving faster on higher fps
            rb.MovePosition(rb.position + velocity * Time.fixedDeltaTime);
        }
    }

    //Jump based on a velocity variable
    void PerformJump()
    {
        //Vector3 variable
        Vector3 dwn = transform.TransformDirection(Vector3.down);

        if (Physics.Raycast(transform.position, dwn, 0.6f))
        {
            if (Input.GetButtonDown("Jump"))
                rb.velocity = new Vector3(0, jumpSpeed, 0);
        }
    }

    void GiveJumpBoost()
    {
        Vector3 dwn2 = transform.TransformDirection(Vector3.down);

        RaycastHit rayHit = new RaycastHit();
        if (Physics.Raycast(transform.position, dwn2, 1f))
        {
            Collider raycastHitCollider = rayHit.collider;
            if (raycastHitCollider.gameObject.tag == "jumpboost")
            {
                Debug.Log("JUUMP!!!!");
            }
        }
    }
}
2

There are many questions and answers here, just search. There’s a solution here:

for example.

(Your question is about a technical problem and not a docs one.)