Error

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

public class PlayerMovement : MonoBehaviour
{
    int MoveSpeed = 1;
    float MaxSpeed = 5f;

    Rigidbody rb;
    Transform ts;

    // Start is called before the first frame update
    void Start()
    {
        rb = gameObject.GetComponent<Rigidbody>();
        ts = gameObject.GetComponent<Transform>();
    }

    // Update is called once per frame
    void FixedUpdate()
    {
        float XMove = Input.GetAxisRaw("Horizontal");
        float YMove = Input.GetAxisRaw("Vertical");

        rb.AddForce(XMove * MoveSpeed, 0, YMove * MoveSpeed, ForceMode.VelocityChange);

        if (rb.velocity.magnitude > MaxSpeed)
        {
            float x = rb.velocity.magnitude / MaxSpeed;
            rb.velocity /= x;
        }
    }

    void OnTriggerEnter(Collider collision)
    {
        if(collision.gameObject.tag == "Finish")
        {
            MoveSpeed = 0;
            rb.velocity = new Vector3(0, 0, 0);
            StartCoroutine(EndPointLerp(collision.gameObject.GetComponent<Transform>().position));
        }
    }

    IEnumerator EndPointLerp(Vector3 EndPointPos)
    {
        while (ts.position != EndPointPos)
        {
            float EndPointLerpSpeed = Vector3.Distance(ts.position, EndPointPos) * 3;
            ts.position = Vector3.Lerp(ts.position, EndPointPos, 0.5f * Time.deltaTime);
        }
    }
}