StartCoroutine does not exist in the current context

I’m following a tutorial to make a fnaf fun game but my code doesn’t work (read title)
Tutorial: How To Make A Fnaf Fan Game In Unity | Main Menu - YouTube around minutes 9 and 10
(The code it’s in C#)

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

public class animatronics : MonoBehaviour 
{

    public GameObject anim1;
    public GameObject anim2;

    // Start is called before the first frame update
    void Start()
    {
        StartCouroutine(Anims());

        anim1.SetActive(true);
        anim2.SetActive(false);
    }

    IEnumerator Anims()
    {
        anim1.SetActive(true);
        yield return new WaitForSeconds(2f);
        anim2.SetActive(true);
        anim1.SetActive(false);
        yield return new WaitForSeconds(0.5f);
        anim2.SetActive(true);
        anim1.SetActive(false);
        yield return new WaitForSeconds(0.5f);
        anim2.SetActive(true);
        anim1.SetActive(false);
        yield return new WaitForSeconds(1f);
        anim2.SetActive(true);
        anim1.SetActive(false);
        yield return new WaitForSeconds(0.5f);
        anim2.SetActive(true);
        anim1.SetActive(false);
        yield return new WaitForSeconds(0.1f);
        StartCouroutine(Anims());
    }
}

You misspelled it StartCouroutine, get rid of the first u, StartCoroutine