Traceback (most recent call last):

 "/code/judge/dmoj/judge.py", line 154, in _begin_grading
short_circuit=short_circuit)):

 "/code/judge/dmoj/judge.py", line 227, in grade_cases
result = grader.grade(case)

 "/code/judge/dmoj/graders/standard.py", line 46, in grade
self.update_feedback(check, error, process, result)

 "/code/judge/dmoj/graders/standard.py", line 60, in update_feedback
callname = callname.replace('sys_', '', 1)AttributeError: 'NoneType' object has no attribute 'replace'

Traceback (most recent call last):

 "<string>", line 20, in <module>

 "C:\Users\me\AppData\Local\Temp\pip-oikxnssj-build\setup.py", line 88, in <module>
long_description=read_to_rst('README.md'),

 "C:\Users\me\AppData\Local\Temp\pip-oikxnssj-build\setup.py", line 20, in read_to_rst
return read(fname)

 "C:\Users\me\AppData\Local\Temp\pip-oikxnssj-build\setup.py", line 11, in read
return open(os.path.join(os.path.dirname(__file__), fname)).read()

 "C:\WinPython\python-3.4.3.amd64\lib\encodings\cp1252.py", line 23, in decode
return codecs.charmap_decode(input,self.errors,decoding_table)[0]
UnicodeDecodeError: 'charmap' codec can't decode byte 0x81 in position 2241: character maps to <undefined>