Error in AnimationState.cpp Line: 307

I'm getting the same error. Here is my code:

     using UnityEngine;
 using System.Collections;
 
 public class FireFlipper1 : MonoBehaviour {
     bool fired;
     public string Command;
     public int speed;
     public string anime;
     //int timeAdjustment;
     // Use this for initialization
     void Start () {
     fired=false;
     //timeAdjustment=0;
     }
     
     // Update is called once per frame
     void Update () {
         if (Input.GetAxis(Command)>0 && !fired)
         {
             animation[anime].speed = speed;
             animation.Play(anime);
             fired=true;
         }
 //        if (animation[anime].time>=animation[anime].length)
 //            fired=true;
         else if (Input.GetAxis(Command)<=0)
         {
             if (fired && animation[anime].time==0)
                 animation[anime].time=animation[anime].length;
             animation[anime].speed = speed*-1;
             animation.Play(anime);
             fired=false;
         }
                 // && fired && (animation[anime].time==0 || 
             //                                       animation[anime].time==animation[anime].length+timeAdjustment))
     }
 }