Firebase getDownloadURL Not working Android

Question

Really need help guys, Here is my Firebase Storage Security Rule

service firebase.storage {
  match /b/shoppinglist-XXXX.appspot.com/o {
    match /{allPaths=**} {
      allow read, write;
    }
  }
}

Here is my Java Code to get a URL Link

storageRef = FirebaseStorage.getInstance().getReference();
   pathRef = storageRef.child("MyBook.pdf");

    storageRef.getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() {
        @Override
        public void onSuccess(Uri uri) {
            Log.d(tag, "MyDownloadLink:  " + uri);
        }
    });

Here is my Error:

     StorageException has occurred.
     User does not have permission to access this object.
{  "error": {    "code": 403,    "message": "Developer credentials required."  }}
                                                                            java.io.IOException: {  "error": {    "code": 403,    "message": "Developer credentials required."  }}

Can Someone Please Help!

Answer 1

You probably meant to download from pathRef, not storageRef. Downloading from the root of the storage tree is not permitted.