Hello,

In trying to use your code, I ran into the error with fetching encoder.json and encoder.bpe.

I resolved the error by removing a whitespace in crop.py line 15 (there was a whitespace after "gpt-2/ ")

I changed it to:
r = requests.get("https://openaipublic.blob.core.windows.net/gpt-2/" + subdir + "/" + filename, stream=True)