Missing file and function

[Oran-Ac]

Hi, I am interested in your proposed method and want to have a try, but I meet the problems below. Could you spare some time to answer my questions？

the GPT2LMHeadModel seems to be no module below

Direct-Style-Transfer/gpt_utils.py

Line 40 in 9ff459e

if model._do_output_past(outputs):

and the past = past

Direct-Style-Transfer/gpt_utils.py

Line 34 in 9ff459e

outputs = model(inputs_embeds=embed, past=past)

it seems that args.critic is not defined

Direct-Style-Transfer/main.py

Line 198 in 9ff459e

if args.critic: