MissingComponentException: There is no 'Camera'

MissingComponentException: There is no 'Camera' attached to the "CoinPrefab" game object, but a script is trying to access it. You probably need to add a Camera to the game object "CoinPrefab". Or your script needs to check if the component is attached before using it. UnityEngine.Camera.set_pixelRect (Rect value) (at C:/BuildAgent/work/d3d49558e4d408f4/artifacts/EditorGenerated/UnityEngineCamera.cs:213) PictireInPicture.AdjustCamera () (at Assets/MyScripts/PictireInPicture.cs:82) PictireInPicture.Update () (at Assets/MyScripts/PictireInPicture.cs:32)

The thing is, i dont want a camera on the coinprefab, and none of my code is asking for it. i have NO idea where this error is coming from and why it randomly wants a camera, it keeps SPAMMING this warning while in play mode

 using UnityEngine;
 using System.Collections;
 
 public class PictireInPicture : MonoBehaviour {
 
     public enum HorizontalAlignment{left, center, right};
     public enum VerticalAlignment{top,middle,bottom};
     public HorizontalAlignment horizontalAlignment = HorizontalAlignment.left;
     public VerticalAlignment verticalAlignment = VerticalAlignment.top;
     public enum ScreenDimensions{pixels,screen_percentage};
     public ScreenDimensions dimensionsIn = ScreenDimensions.screen_percentage;
     public int width = 50;
     public int height = 50;
     public float xOffset = 0f;
     public float yOffset = 0f;
     public bool update = true;
     private int hsize, vsize, hloc , vloc;
 
     // Use this for initialization
     void Start () 
     {
         AdjustCamera ();
     
     }
     
     // Update is called once per frame
     void Update ()
     {
     if (update)
         {
 
             AdjustCamera();
         }
     }
 
     void AdjustCamera()
     {
         if (dimensionsIn == ScreenDimensions.screen_percentage)
         {
             hsize = Mathf.RoundToInt(width * 0.01f * Screen.width);
             vsize = Mathf.RoundToInt(height * 0.01f * Screen.height);
 
         }
 
         else  
         {
             hsize = width;
             vsize = height;
         }
         if (horizontalAlignment == HorizontalAlignment.left) 
         {
             hloc = Mathf.RoundToInt(xOffset * 0.01f * Screen.width);
 
         }
         else if (horizontalAlignment == HorizontalAlignment.right) 
         {
 
             hloc = Mathf.RoundToInt(((Screen.width - hsize) - (xOffset * 0.01f * Screen.width)));
         }
         else
         {
             hloc = Mathf.RoundToInt((Screen.width * 0.5f) - (hsize * 0.5f) - (xOffset * 0.01f * Screen.width));             
         }
 
 
         if (verticalAlignment == VerticalAlignment.top) 
         {
             vloc = Mathf.RoundToInt(( Screen.height - vsize) - (yOffset * 0.01f * Screen.height));
         }
         else if (verticalAlignment == VerticalAlignment.bottom) 
         {
             vloc = Mathf.RoundToInt(( yOffset * 0.01f * Screen.height));
         }
 
         else 
         {
 
             vloc = Mathf.RoundToInt(((Screen.height * 0.5f) - (vsize * 0.5f)) - (yOffset * 0.01f * Screen.height));
                 
         }
 
         camera.pixelRect = new Rect (hloc, vloc, hsize, vsize);
     }
 
 }

this is my minimap code, the problem seems to lie within