Dodgeroll script crashing game

I made a script allowing the player to dodge, but for some reason, when i pressed the button, it crashed unity, and every time i try to open it now its crashing. I can fix it externally, but i need to know what is even causing the problem.

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class walk : MonoBehaviour
 {
     public float XRotation = 0f;
     float mouseSensitivity = 300f;
     public float YRotation = 0f;
     public CharacterController control;
     public Animator anim;
     public Camera cam;
     public Vector3 position;
     public float gravity = -3f;
     public float speed = 5f;
     Vector3 velocity;
     public bool asd;
     public float dashtime;
     public Vector3 move;
     public float dashspeed = 10f;
 
     public Vector3 dirright;
     public Vector3 dirleft;
 
     public float starttime;
     public bool dashright, dashleft;
 
     // Start is called before the first frame update
     void Start()
     {
         control = this.transform.GetComponent<CharacterController>();
         anim = this.GetComponent<Animator>();
         asd = true;
     }
 
     // Update is called once per frame
     void Update()
     {
         dirleft = Vector3.left;
         dirright = Vector3.right;
         while (Time.time < Time.time + starttime)
         {
             if(dashleft == true)
             {
                 move = dirleft;
                 speed = dashspeed;
             }
             if(dashright == true)
             {
                 speed = dashspeed;
                 move = transform.right;
             }
         }
 
         control.Move(velocity * Time.deltaTime);
         control.Move(move * speed * Time.deltaTime);
         velocity.y += gravity * Time.deltaTime;
 
         if (asd == true && Time.time >= Time.time + starttime)
         {
             float x = Input.GetAxis("Horizontal");
             float z = Input.GetAxis("Vertical");
 
             move = transform.right * x + transform.forward * z;
         }
         if (Input.GetKey("mouse 0") == false && Input.GetKey("mouse 1") == true)
         {
             asd = false;
 
             float MouseX = Input.GetAxis("Mouse X") * mouseSensitivity * Time.deltaTime;
 
             if (Input.GetKeyDown(KeyCode.Q))
             {
                 starttime = Time.time;
                 dashleft = true;
             }
             if (Input.GetKeyDown(KeyCode.E))
             {
                 dashright = true;
                 starttime = Time.time;
 
             }
         }
         if (Input.GetKeyUp("mouse 1"))
         {
             asd = true;
         }
     }
 }