Inventor Script Error , How to Fix It ?

Here Error "Assets/_Scripts/Inventory/InventoryAddItem.js(4,23): BCE0018: The name 'PlayerInventory' does not denote a valid type ('not found'). "

Here Codes : Inventoru Add Item:

 #pragma strict
     //Private
     var TheInventory : InventoryGUI;
     var TheTextures : PlayerInventory;
     var ArrayGrid = 0;
  
     static var InventoryNewItemAdded = -1;
  
     //Icons
     var BlankIcon : Texture;
     var TheNewItem : Texture;
  
     function Start () 
     {
        TheInventory = GetComponent(InventoryGUI);
        TheTextures = GetComponent(PlayerInventory);
     }
  
     function newItem () 
     {
        if (InventoryAddItem.InventoryNewItemAdded > -1)
        {
           TheNewItem = TheTextures.itemTexture[InventoryAddItem.InventoryNewItemAdded];
           if (ArrayGrid < TheInventory.Grids.length)
           {
              if (TheInventory.Grids[ArrayGrid].image == BlankIcon)
              {
                 TheInventory.Grids[ArrayGrid].image = TheNewItem;
                 ArrayGrid = 0;
                 InventoryAddItem.InventoryNewItemAdded = -1;
              }
              else if (TheInventory.Grids[ArrayGrid].image != BlankIcon)
              {
                 ArrayGrid += 1;
              }
           }
        }
     }

Second Code : Inventor GUI: #pragma strict //Private Variables private var InventoryOn = false; private var scrollBarChopGrid : Vector2 = Vector2.zero; private var GridValue : float = -1; var myskin : GUISkin;

//GUI Pos/Size var NamePosition : Vector2 = new Vector2(30,30); var NameSize : Vector2 = new Vector2(250,250); var GridPosition : Vector2 = new Vector2(10,5); var GridSize : Vector2 = new Vector2(323,410); var ClosePosition : Vector2 = new Vector2(312,5); var CloseSize : Vector2 = new Vector2(35,35); var ScrollPosition : Vector2 = new Vector2(312,5); var ScrollSize : Vector2 = new Vector2(355,500); var WindowPosition : Vector2 = new Vector2(0,0); var WindowSize : Vector2 = new Vector2(360,360); var DragWindowPosition : Rect = Rect(0,0,WindowSize.x,WindowSize.y);

//Textures var InventoryWindow : Texture; var CloseIcon : Texture; var Grids : GUIContent[];

function Update () { var AddingNewItem : InventoryAddItem = GetComponent(InventoryAddItem); //On or Off if (Input.GetKeyUp ("i")) {

   if (InventoryOn == false)
   {
      InventoryOn = true;
   }
   else if (InventoryOn == true)
   {
      InventoryOn = false;
      scrollBarChopGrid.y = 0;
   }

} //Window Drag Fix if (Input.GetKey("left shift")) { if (Input.GetKeyDown("i")) { DragWindowPosition.x = 0; DragWindowPosition.y = 0;

   }

} AddingNewItem.newItem(); }

function OnGUI() { GUI.skin = myskin; if (InventoryOn == true) { DragWindowPosition = GUI.Window(0, DragWindowPosition, DoMyWindow, ""); } }

function DoMyWindow(windowID : int) { if (InventoryOn == true) { GUI.BeginGroup(new Rect(WindowPosition.x, WindowPosition.y, WindowSize.x, WindowSize.y), InventoryWindow); //Name GUI.Label(Rect(NamePosition.x, NamePosition.y, NameSize.x, NameSize.y), "Your Inventory");

      //Close Button
      if (GUI.Button(Rect(ClosePosition.x, ClosePosition.y, CloseSize.x, CloseSize.y), CloseIcon))
      {
         InventoryOn = false;
      }
      //Scroll Bar
    scrollBarChopGrid = GUI.BeginScrollView(Rect (ScrollPosition.x, ScrollPosition.y, ScrollSize.x, ScrollSize.y), scrollBarChopGrid, Rect(0,0,0,420));
      // Grid
      GridValue = GUI.SelectionGrid(Rect(GridPosition.x, GridPosition.y, GridSize.x, GridSize.y), GridValue, Grids, 5);
      GUI.EndScrollView();
 
      //Dragable Window
      GUI.DragWindow (Rect (WindowPosition.x, WindowPosition.y, 10000, 40));
   GUI.EndGroup();
 

} }