title: Unable to get the Downlaod Url of a file from Firebase Storage
body: <p>i m working on an Android project based on pdf generation and get stored on the firebase storage, and get the Download url to download the file, my file is automatically selected and uploaded at the time of pdf generation but i m not able to get the download url of the file uploaded on firebase storage. I m kinda new to firebase so here is the code below  </p>
  
  <pre><code>    String path = Environment.getExternalStorageDirectory().getAbsolutePath() + "/PDF";
      File file = new File(path, "report.pdf");
      Uri filepicked = Uri.fromFile(file);
      StorageReference fileReference = mStorageRef.child(cusname +" "+"report" + "." +".pdf");
      fileReference.putFile(filepicked);
      StorageReference storageReference = fileReference.child(cusname+" "+"report");
      storageReference.getDownloadUrl().addOnSuccessListener(new OnSuccessListener&lt;Uri&gt;() {
          @Override
          public void onSuccess(Uri uri) {
              String link = uri.toString();
              DatabaseReference reference = mDatabaseRef.child(cusname+" "+
                      "report");
              reference.setValue(link);
          }
      });
  </code></pre>
  
  <p>and as i run the application at the part of uploading it uploads the file but dont give me the download Url and shows me this error</p>
  
  <pre><code>//StorageException: StorageException has occurred.
      Object does not exist at location.
       Code: -13010 HttpResult: 404
  E/StorageException: {  "error": {    "code": 404,    "message": "Not Found.  Could not get object"  }}
      java.io.IOException: {  "error": {    "code": 404,    "message": "Not Found.  Could not get object"  }}//
  </code></pre>