Check if Inventory are empty

Hello, I would like to check at Playfab whether the player's inventory is empty. But unfortunately it doesn't work for me. Can someone help me please

Code (CSharp):

1.  
2.         GetUserInventoryRequest getUserInventoryRequest = new GetUserInventoryRequest();
3.         PlayFabClientAPI.GetUserInventory(getUserInventoryRequest, OnGetUserInventory, OnPlayFabError);
4.     }
5.  
6.     private void OnPlayFabError(PlayFabError obj)
7.     {
8.         throw new NotImplementedException();
9.     }
10.  
11.     private void OnGetUserInventory(GetUserInventoryResult result)
12.         {
13.  
14.         List<ItemInstance> userInventoryList = result.Inventory;
15.  
16.         foreach (ItemInstance i in result.Inventory)
17.         {
18.            
19.          
20.  
21.                    if(userInventoryList.Count == 0)
22.                      {
23.                 SceneManager.LoadScene("IntoChoose");
24.                 break;
25.  
26.             }
27.         }
28.             }
29.  

 

Code (CSharp):

1. public bool checkIfEmpty(List<GameObject> list){
2.     if(list.Count == 0){
3.         return true;
4.     } else {
5.         return false;
6.     }
7. }

 

thank you