problem with training my model using ufd

[tk41c]

from sgnlp.models.ufd.utils import parse_args_and_load_config
from sgnlp.models.ufd.train import train
import json

cfg = parse_args_and_load_config("json file directory")
train(cfg)

Above is the code i got from the sgnlp ufd's documentation to train the ufd model on a custom dataset. As this is my first time training a pre trained NLP im not sure what im doing wrong but i keep getting the error:

File ~\anaconda3\envs\myenv\lib\encodings\cp1252.py:23 in decode
return codecs.charmap_decode(input,self.errors,decoding_table)[0]

UnicodeDecodeError: 'charmap' codec can't decode byte 0x81 in position 3: character maps to

I have tried many solutions but none of them have worked.

Is there something im doing wrong?