W4 ungraded lab: Transformer Network Application: Question Answering

How to normalize the JSON column in pandas. I have tried a lot but not getting any success in converting. I used the following command

pd.json_normalize(df_data[‘annotation’])

AttributeError: ‘list’ object has no attribute ‘values’ or str has no indices etc

Which assignment are you working on?

The ungraded Lab regarding Transformer Applications

Thanks for the info.
Sorry, I haven’t looked at the labs yet.