There is a bug in 1-Introduction Stock_NeurIPS2018_SB3.ipynb

[Boreas813]

MergeError: Passing 'suffixes' which cause duplicate columns {'account_value_x'} is not allowed.

please change to this code:
result = pd.merge(df_result_a2c, df_result_ddpg, left_index=True, right_index=True)
result = pd.merge(result, df_result_td3, left_index=True, right_index=True)
result = pd.merge(result, df_result_ppo, left_index=True, right_index=True, suffixes=('_1', '_2'))
result = pd.merge(result, df_result_sac, left_index=True, right_index=True)
result = pd.merge(result, MVO_result, left_index=True, right_index=True, suffixes=('_3', '_4'))
result = pd.merge(result, df_dji, left_index=True, right_index=True, suffixes=('_5', '_6'))
result.columns = ['a2c', 'ddpg', 'td3', 'ppo', 'sac', 'mean var', 'dji']