def METHOD_NAME():
    # CartPole-v1 - observation_space: Box(4,), action_space: Discrete(2)
    env_fns = [make_env("CartPole-v1", i) for i in range(8)]
    # FrozenLake-v1 - Discrete(16), action_space: Discrete(4)
    env_fns[1] = make_env("FrozenLake-v1", 1)
    with pytest.raises(RuntimeError):
        env = SyncVectorEnv(env_fns)
        env.close()