Unity - AIfire Has No Reciver!

Hi Guys, Im developing my 2d game and I'm currently working on my AI, however when i send a message to tell that my AI has to fire its weapon its not firing and it spits out an error.

Heres my AI code -

 if(Vector2.Distance(transform.position, Player.position) >= ShootDist){
     rigidbody2D.velocity.x = 0;
     timer += Time.deltaTime;
     if(timer > 0.1){
         timer -= 0.1;
         SendMessage("AIfire", SendMessageOptions.RequireReceiver);
     }
 }

and heres the function in my AI weapon script

 function AIfire () {
         yield WaitForSeconds(FireRate);
         Instantiate(Muzzle, EffectSpawn.position, EffectSpawn.rotation);
         Instantiate(Tracer, TracerSpawn.position, TracerSpawn.rotation);
         audio.PlayOneShot(ShootSound);
         
         var trans : Vector2 = new Vector2(transform.position.x, transform.position.y);
 //        var hit : RaycastHit2D;
         var fwd3 = transform.TransformDirection(Vector2.right);
         var fwd = Vector2(fwd3.x, fwd3.y);
         
         Debug.DrawRay(trans,fwd);
         
         var hit : RaycastHit2D = Physics2D.Raycast(trans,fwd,range);
             if(hit != null){
             if(hit.collider.tag == "Concrete"){
                 hit.collider.SendMessageUpwards("ApplyDamage", damage, SendMessageOptions.DontRequireReceiver);
                 Instantiate(ConcreteImpact,hit.point,Quaternion.FromToRotation(Vector2.up,hit.normal));
             }
         //If shoot an object taged as Metal then spawn a Metal Hole And a Metal Impact at the exact pos when it was hit                
             if(hit.collider.tag == "Metal"){
                 hit.collider.SendMessageUpwards("ApplyDamage", damage, SendMessageOptions.DontRequireReceiver);
                 Instantiate(MetalImpact,hit.point,Quaternion.FromToRotation(Vector2.up,hit.normal));
             }
         //If shoot an object taged as Glass then spawn a Glass Hole And a Glass Impact at the exact pos when it was hit            
             if(hit.collider.tag == "Glass"){
                 hit.collider.SendMessageUpwards("ApplyDamage", damage, SendMessageOptions.DontRequireReceiver);
                 Instantiate(GlassImpact,hit.point,Quaternion.FromToRotation(Vector2.up,hit.normal));
             }
         //If shoot an object taged as Blood then spawn a Blood Hole And a Blood Impact at the exact pos when it was hit
             if(hit.collider.tag == "Blood"){
                 hit.collider.SendMessageUpwards("ApplyDamage", damage, SendMessageOptions.DontRequireReceiver);
                 hit.collider.SendMessageUpwards("Damage", damage, SendMessageOptions.DontRequireReceiver);
                 Instantiate(BloodImpact,hit.point,Quaternion.FromToRotation(Vector2.up,hit.normal));
             }
         //If shoot an object taged as Untagged then spawn a Untagged Hole And a Untagged Impact at the exact pos when it was hit                
             if(hit.collider.tag == "Untagged"){
                 hit.collider.SendMessageUpwards("ApplyDamage", damage, SendMessageOptions.DontRequireReceiver);
                 Instantiate(UntaggedImpact,hit.point,Quaternion.FromToRotation(Vector2.up,hit.normal));
             }
         }
     
         //Apply Damage When an object is hit (only works when the object has a script with a function named ApplyDamage, aka a damage script)
         hit.collider.SendMessageUpwards("ApplyDamage", damage, SendMessageOptions.DontRequireReceiver);
 
 }