Logging Error: rollout buffer

[Hegelim]

I am just trying to run the Stock_NeurIPS2018_SB3.ipynb notebook, and I got "Logging Error: rollout buffer" when I tried to run

trained_ddpg = agent.train_model(model=model_ddpg, 
                             tb_log_name='ddpg',
                             total_timesteps=50000) if if_using_ddpg else None