Variable type Rigidbody2D cannot be assigned to Rigidbody2D, how to solve the problem?

Question

Unity

using UnityEngine;

public class player : MonoBehaviour
{
    public float jumpForce = 10f;

    public Rigidbody2D rb;

    void Start()
    {
       rb = GameObject.FindWithTag("player").GetComponent<Rigidbody2D>();

    }
    void Update()
    {
        if(Input.GetMouseButton(0))
        {
            rb.velocity = Vector2.up * jumpForce;
        }
    }
}

Выдает ошибку: The variable rb of player has not been assigned.

Answer 1

Most likely the Player tag. And also give up these finds

Answer 2

Do you have one player? Throw it through the unity interface (just transfer the object that has rb to the appropriate property).
If there are several, do it as a separate script or object.
Maybe your player doesn't have rb. Or there is no object with the corresponding tag at all.
You can try using new