title: Simple Image Upload from Unity to Firebase not working
body: <p>I am working on an IOS App which I create with Unity in C# (Unity 2018.2.5f1). Now I'm trying to upload an image to Firebase Storage to get familiar with it. Unfortunately this doesn't work.</p>
  
  <p>I assume there is a problem with the path to the local file. I get the following error in XCode when running the app.</p>
  
  <p>Firebase.Storage.Storage.StorageException: There is no object at the desired reference.</p>
  
  <p>The file swift.jpg definitively exists on the iPhone.</p>
  
  <p>Your help is very welcome.</p>
  
  <pre><code>using UnityEngine;
  using Firebase.Storage;
  using System.Threading.Tasks;
  
  public class Upload : MonoBehaviour {
  
      FirebaseStorage storage;
      StorageReference storage_ref;
  
      // Use this for initialization
      void Start () {
          storage = FirebaseStorage.DefaultInstance;
          storage_ref = storage.GetReferenceFromUrl("gs://[My Storage URL]");
  
          // File located on disk
          string local_file = Application.persistentDataPath + "/" + "swift.jpg";
  
          // Create a reference to the file you want to upload
          StorageReference image_ref = storage_ref.Child("images/swift.jpeg");
  
          // Upload the file to the path
          image_ref.PutFileAsync(local_file)
            .ContinueWith((Task&lt;StorageMetadata&gt; task) =&gt; {
                if (task.IsFaulted || task.IsCanceled) {
                    Debug.Log(task.Exception.ToString());
                    // Uh-oh, an error occurred!
                }
                else {
                    // Metadata contains file metadata such as size, content-type, and download URL.
                    // StorageMetadata metadata = task.Result;
                    // string download_url = metadata.DownloadUrl.ToString();
                    // Debug.Log("Finished uploading...");
                    // Debug.Log("download url = " + download_url);
                }
            });
      }
  
  }
  </code></pre>