Why doesn't movement work in the build?

Question

Unity

Everything works fine in the unit, but when I create a build, only one script with movement does not work, everything else works. I've looked all over, and there's no answer anywhere.
Here is the code:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Moving : MonoBehaviour
{
    public Rigidbody rb;
    float maxSpeed = 8;
    float staticSpeed = 8;
    void Update()
    {
        if (Input.GetKey(KeyCode.W))
        {
            rb.AddForce(Vector3.forward);
        }
        if (Input.GetKey(KeyCode.S))
        {
            rb.AddForce(Vector3.back);
        }
        if (Input.GetKey(KeyCode.A))
        {
            rb.AddForce(Vector3.left);
        }
        if (Input.GetKey(KeyCode.D))
        {
            rb.AddForce(Vector3.right);
        }
        maxSpeed = staticSpeed;
        if (rb.velocity.magnitude > maxSpeed)
        {
            rb.velocity = rb.velocity.normalized * maxSpeed;
        }
    }
}

Answer 1

Find out step by step:

• Does your game object even exist on stage?
  
• Is your component enabled
  
• What kind of regidbody does he have in the settings
  
• Does GetKey work?
  
• Does Addforce work?
  
• What is your condition