Footstep Sound Issue

Hi, Im trying to make footstep audio when i walk in my game. But here is my error:

MissingComponentException: There is no 'AudioSource' attached to the "First Person Controller" game object, but a script is trying to access it. You probably need to add a AudioSource to the game object "First Person Controller". Or your script needs to check if the component is attached before using it. FootStepsOn.PlayAudio () (at Assets/FootStepsOn.js:71) FootStepsOn.Update () (at Assets/FootStepsOn.js:11)

Here is my code:

var walk : AudioClip; var run : AudioClip;

   var isWalking : boolean = false;
   var isRunning : boolean = false;
    
    
   function Update()
   {
   GetState();
   PlayAudio();
   }
    
    
   function GetState()
   {
   if ( Input.GetAxis( "Horizontal" ) || Input.GetAxis( "Vertical" ) )
   {
   if ( Input.GetKey( "left shift" ) || Input.GetKey( "right shift" ) )
   {
   // Running
   isWalking = false;
   isRunning = true;
   }
   else
   {
   // Walking
   isWalking = true;
   isRunning = false;
   }
   }
   else
   {
   // Stopped
   isWalking = false;
   isRunning = false;
   }
   }
    
    
   function PlayAudio()
   {
   if ( isWalking )
   {
   if ( GetComponent.<AudioSource>().clip != walk )
   {
   GetComponent.<AudioSource>().Stop();
   GetComponent.<AudioSource>().clip = walk;
   }
    
   if ( !GetComponent.<AudioSource>().isPlaying )
   {
   GetComponent.<AudioSource>().Play();
   }
   }
   else if ( isRunning )
   {
   if ( GetComponent.<AudioSource>().clip != run )
   {
   GetComponent.<AudioSource>().Stop();
   GetComponent.<AudioSource>().clip = run;
   }
    
   if ( !GetComponent.<AudioSource>().isPlaying )
   {
   GetComponent.<AudioSource>().Play();
   }
   }
   else
   {
   GetComponent.<AudioSource>().Stop();
   }
   }

AND here is an image that i attached the audio together: