I have a csv which has format as follows

I need to parse this into a txt file whilst keeping a dictionary format. I use langchain:

loader = CSVLoader(file_path='test.csv', encoding="utf-8",csv_args={'delimiter': ','} )
loader.load()

however i get this error:

    f"{k.strip()}: {v.strip() if v is not None else v}"
       ^^^^^^^
AttributeError: 'NoneType' object has no attribute 'strip'