# Prints the exception traceback for debuggability.
    traceback.print_exception(ex)
    # Additional error log for debuggability.
    logging.error(error_msg)
    return None


def _save_model_and_copy_assets(
    exported_model: exported_model_pb2.ExportedModel,
    src_saved_model_path: str,
    dst_saved_model_path: str,
    signature_def_map: Mapping[str, meta_graph_pb2.SignatureDef],
    tags: Collection[str],