assert key created_at exist in config_states

            try:

                with open(path, "r", encoding="utf-8") as f:

                    j = json.load(f)

                    assert "created_at" in j, '"created_at" does not exist'

                    j["filepath"] = path

                    config_states.append(j)

            except Exception as e:

                print(f'[ERROR]{path}, {e}')

                print(f'[ERROR]: Config states {path}, {e}')

    config_states = sorted(config_states, key=lambda cs: cs["created_at"], reverse=True)