Hello i'm new to unity and just watching a beginner's tutorial and i have problem

Questions & Answers
1

I do everything as shown in the guide, but I still get an error in the same place:
NullReferebceException: Object reference not set to an instance of an object PlayerController.
Someone will help?
the tutorial I am currently using:

2

You likely didn’t attach the _prefab gameobject to the object in the editor, or the object to the playercontroller.

3

If ObjectBechaviour and PlayerController script is attached to same gameobject, then you can try changing some lines in PlayerController script

public class PlayerController : Monobehaviour
{
  ObjectBechaviour _objectBechaviour;

  void Start()
  {
    _objectBechaviour = GetComponent<ObjectBechaviour>().SpawnObject();
  }
}

Now check if you are still getting the error