get_file_encoding error

[rotcx]

arxiv number: 1612.02523
temporary directory /var/folders/xz/b53crnzx71j3q8q7fh6qch400000gp/T/tmpmt9nyn04
This is a pure text file
main tex files found:
Traceback (most recent call last):
File "/usr/local/bin/translate_arxiv", line 8, in
sys.exit(main())
File "/usr/local/lib/python3.7/site-packages/mathtranslate/translate_arxiv.py", line 221, in main
raise e
File "/usr/local/lib/python3.7/site-packages/mathtranslate/translate_arxiv.py", line 211, in main
success = translate_dir('.', options)
File "/usr/local/lib/python3.7/site-packages/mathtranslate/translate_arxiv.py", line 111, in translate_dir
content = open(path, encoding=input_encoding).read()
File "/usr/local/Cellar/[email protected]/3.7.12/Frameworks/Python.framework/Versions/3.7/lib/python3.7/codecs.py", line 322, in decode
(result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xa1 in position 67479: invalid start byte

---

arxiv number: 1612.02523
temporary directory /var/folders/xz/b53crnzx71j3q8q7fh6qch400000gp/T/tmpwz89rjiv
download completed...
This is a pure text file
main tex files found:
Traceback (most recent call last):
File "/usr/local/bin/translate_arxiv", line 8, in
sys.exit(main())
File "/usr/local/lib/python3.7/site-packages/mathtranslate/translate_arxiv.py", line 221, in main
raise e
File "/usr/local/lib/python3.7/site-packages/mathtranslate/translate_arxiv.py", line 211, in main
success = translate_dir('.', options)
File "/usr/local/lib/python3.7/site-packages/mathtranslate/translate_arxiv.py", line 110, in translate_dir
input_encoding = get_file_encoding(path)
File "/usr/local/lib/python3.7/site-packages/mathtranslate/encoding.py", line 21, in get_file_encoding
if result['confidence'] < 0.9:
TypeError: '<' not supported between instances of 'NoneType' and 'float'