I'm simply running "osc-blog.ipynb" inside "hello-ltr/notebooks/elasticsearch/osc-blog/" with jupyter notebook. I can run only the first cell, because in the second one, where is json.loads, comes

UnicodeDecodeError: 'charmap' codec can't decode byte 0x9d in position 1780: character maps to

I read that with python 3.9 encoding argument has been removed, so I don't know how to resolve the problem.