Unity is freezing when I change my script, what can I do? [SOLVED]

Hey guys! I'm currently working on a project in Unity for my classes and I've stumbled on a problem that I don't know how to fix.

I have a script for a character (Unity 2D) that makes it shoot a bullet to kill enemies. At first, when I tested the script, everything was working perfectly fine, however, I had animations to add to the character shooting the bullet, so I needed to relate the character's Animator with the script.

I did that, and the script didn't return any errors, but when I got to playtest it, Unity just froze. I didn't return any errors or warnings, it didn't play, I couldn't close it, so I had to stop its activity via the Task Manager.

 public class Shooter : MonoBehaviour
 {
     public float dirx;
     public KeyCode shoot;
     public GameObject bullet;

     public Animator animatortwo;

     void Start()
     {
         StartCoroutine(waitthree());
     }

     IEnumerator waitthree()
     {
         while (true)
         {
             dirx = Input.GetAxisRaw("Horizontal");

             if (dirx == 0)
             {
                 dirx = 1;
             }

             if (Input.GetKeyDown(shoot))
             {
                 animatortwo.SetTrigger("Shoot");

                 var newbullet = Instantiate(bullet, 
                 transform.position, transform.rotation);
                 newbullet.GetComponent<Bullet>().dirx = dirx;

                 yield return new WaitForSeconds(0.11f);

                 animatortwo.ResetTrigger("Shoot");
             }
         }
     }
 }

Any ideas on why this possibly happened and how can I fix it? When the script was without the Animator, it worked fine.