Plugin.FilePicker CrossFilePicker not picking files from SD card. (Xamarin Forms Android Only)

Hi

When i try to pick file from SD card, CrossFilePicker throws exception "System.IO.DirectoryNotFound Exception".

    file = await CrossFilePicker.Current.PickFile();
            if (file == null)
            {
                return;
            }

            fileData = file.DataArray;
            filePath = file.FilePath;

Do i need to add anything specific to access file from SD card.

Note: I added ReadExternalStorage, WriteExternalStorage permissions.

Thanks,
Santhosh