Question Need a little help figuring out an "object not set to an instance" error

I'm getting an error on line 65: txtSpeedometer.text = distanceTraveled.ToString("000");

The code:

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using System;
5. using TMPro;
6.  
7. public class SpeedoMeter : MonoBehaviour
8. {
9.     #region Public Variables
10.  
11.     public float distanceTraveled;
12.     public float speed;
13.     public float unitSecs = 1.0f; // units/sec
14.  
15.     // ship forward velocity variables
16.     public bool isMovingForward;
17.     public bool isMovingBackward;
18.     public Vector3 LastPOS;
19.     public Vector3 NextPOS;
20.  
21.     [Header("RigidBodies")]
22.     public Rigidbody rbPlayerShip;         //used to calculate velocity
23.  
24.     [Header("Object Transforms")]
25.     public Transform playerPos;
26.     [SerializeField] public TextMeshProUGUI txtSpeedometer;
27.     //
28.     #endregion
29.  
30.     // Start is called before the first frame update
31.     void Awake()
32.     {
33.         rbPlayerShip = GetComponent<Rigidbody>();
34.     }
35.  
36.     // Update is called once per frame
37.     void Update()
38.     {
39.         //get the ship's speed
40.         Speedometer(); // <--call this in Racemanager Update
41.     }
42.  
43.     void LateUpdate()
44.     {      
45.         SpeedToString();
46.         //orientationCheckScript.CheckOrientation();
47.         //checkForwardMovement();
48.     }
49.     //check to make sure ship is moving forward
50.     public void checkForwardMovement()
51.     {
52.         //Debug.Log("checkForwardMovement");
53.  
54.     }
55.  
56.     //speedometer
57.     public void Speedometer()
58.     {
59.         distanceTraveled = rbPlayerShip.GetComponent<Rigidbody>().velocity.magnitude;
60.         speed = Time.deltaTime * distanceTraveled;
61.  
62.         Debug.Log("Distancetraveled: " + distanceTraveled);
63.         //Debug.Log("Speed: " + speed);
64.        
65.         txtSpeedometer.text = distanceTraveled.ToString("000");
66.  
67.     }
68.     public void SpeedToString()
69.     {
70.  
71.         if (distanceTraveled > 1)
72.         {
73.            //txtSpeedometer.text = distanceTraveled.ToString("000");
74.             //txtSpeedometer.text = speed.ToString("000");          
75.             //Debug.Log("to string");
76.         }
77.         //Debug.Log(speed);
78.     }
79.  
80. }
81.  

Not sure what's happening, it's assigned in the inspector:

 

Most likely you have another copy of the SpeedoMeter script in your scene, and on that copy, the text object is not assigned.

 

It is ALWAYS the same three steps... ALWAYS!

How to fix a NullReferenceException error

https://forum.unity.com/threads/how-to-fix-a-nullreferenceexception-error.1230297/

Three steps to success:
- Identify what is null <-- any other action taken before this step is WASTED TIME
- Identify why it is null
- Fix that

 

Perfect, thank you so much!