why is unity saying this in the console im really confused

so im making a small co-op game as a break from my main project and im a weird error that makes no sense

here's my code for reference

Code (CSharp):

1.    private Rigidbody2D rb;
2.     public Animator anim;
3.  
4.     public float movespeed;
5.     public float jumpforce;
6.  
7.     public KeyCode jump;
8.     public KeyCode right;
9.     public KeyCode left;
10.     public KeyCode shoot;
11.  
12.     public Transform groundcheckpoint;
13.  
14.     public bool isgrounded;
15.     public float groundcheckradius;
16.     public LayerMask whatisjumpable;
17.  
18.     // Start is called before the first frame update
19.     private void Start()
20.     {
21.         rb = GetComponent<Rigidbody2D>();
22.         anim = GetComponent<Animator>();
23.     }
24.  
25.     // Update is called once per frame
26.     private void Update()
27.     {
28.         isgrounded = Physics2D.OverlapCircle(groundcheckpoint.position, groundcheckradius, whatisjumpable);
29.  
30.         if (Input.GetKey(left))
31.         {
32.             rb.velocity = new Vector2(-movespeed, rb.velocity.y);
33.         }else if (Input.GetKey(right))
34.         {
35.             rb.velocity = new Vector2(movespeed, rb.velocity.y);
36.         }
37.         else
38.         {
39.             rb.velocity = new Vector2(0, rb.velocity.y);
40.         }
41.  
42.         if (Input.GetKeyDown(jump) && isgrounded)
43.         {
44.             isgrounded = false;
45.             rb.velocity = new Vector2(rb.velocity.x, jumpforce);
46.         }
47.  
48.  
49.         anim.SetFloat("speed", rb.velocity.x);
50.         anim.SetBool("grounded", isgrounded);

and then the error is this

NullReferenceException: Object reference not set to an instance of an object
UnityEditor.Graphs.Edge.WakeUp () (at /Users/bokken/buildslave/unity/build/Editor/Graphs/UnityEditor.Graphs/Edge.cs:114)
UnityEditor.Graphs.Graph.DoWakeUpEdges (System.Collections.Generic.List`1[T] inEdges, System.Collections.Generic.List`1[T] ok, System.Collections.Generic.List`1[T] error, System.Boolean inEdgesUsedToBeValid) (at /Users/bokken/buildslave/unity/build/Editor/Graphs/UnityEditor.Graphs/Graph.cs:387)
UnityEditor.Graphs.Graph.WakeUpEdges (System.Boolean clearSlotEdges) (at /Users/bokken/buildslave/unity/build/Editor/Graphs/UnityEditor.Graphs/Graph.cs:286)
UnityEditor.Graphs.Graph.WakeUp (System.Boolean force) (at /Users/bokken/buildslave/unity/build/Editor/Graphs/UnityEditor.Graphs/Graph.cs:272)
UnityEditor.Graphs.Graph.WakeUp () (at /Users/bokken/buildslave/unity/build/Editor/Graphs/UnityEditor.Graphs/Graph.cs:250)
UnityEditor.Graphs.Graph.OnEnable () (at /Users/bokken/buildslave/unity/build/Editor/Graphs/UnityEditor.Graphs/Graph.cs:245)

what the actual hell does this error mean thank you for reading

 

It's a bog-standard Null reference error, but the error doesn't look to actually be at all related to the script you posted, but something to do with a UnityEditor.Graphs script.

 

stupid question, but have all your public variables been assigned something?

 

That doesn't happen in your code, and looks like Graph editor glitched out.

Does this persist if you restart the editor?

 

What happens if you clear the log?

 

ok thanks melvmay

 

im going to try and restart it

 

yeah unity had just decided it didn't like