Error when changing buffer with UTF-8 characters

[mgdreamingstar]

error caught in async handler 'python_chdir' ('D:\Documents\Drafts\\xe5\x85\xb3\xe4',)'
Traceback (most recent call last):
File "D:\Anaconda\lib\site-packages\pynvim\plugin\script_host.py", line 170, in python_chdir
os.chdir(cwd)
WindowsError: [Error 2] : "D:\Documents\Drafts\\xe5\x85\xb3\xe4"

[justinmk]

what exact version of python, nvim, pynvim