Input is a file

if input_type == 'file':
    # __import__('pdb').set_trace()
    with open(input_data, 'rt') as fpt:
        # input_data = fpt.read().decode("UTF-8")
        input_data = fpt.read()

now it work

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@vsc1t thanks for the issue. Which part did you change in the *.py file?

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I had the same error as the commenter above. The issue is in line 249 of diff.py, in which the ftp.read().decode("UTF-8") is attempting to decode an already decoded string. I dropped the .decode part and it works.

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