Error with cyrilic file names

Versions

OS: Windows 10
GTK+ Version: 3.24.1
PyGObject Version: 3.30.4
python-nbxmpp Version: 0.6.9
Gajim Version: 1.1.2

Traceback

Traceback (most recent call last):
  File "C:/msys64/home/appveyor/gajim/win/_build_root/mingw64/lib/python3.7/site-packages/gajim/gtk/dialogs.py", line 56, in on_response
  File "C:/msys64/home/appveyor/gajim/win/_build_root/mingw64/lib/python3.7/site-packages/gajim/gtk/dialogs.py", line 264, in on_response_yes
  File "C:\Users\User\AppData\Roaming\Gajim\Plugins\omemo\file_crypto.py", line 159, in open_file
    os.startfile(path)
FileNotFoundError: [WinError 2] Не удается найти указанный файл: 'C:\\Users\\User\\AppData\\Roaming\\Gajim\\downloads\\%D0%A0%D0%B0%D0%B1%D0%BE%D1%82%D0%B0_%D0%BF%D0%BE%D0%BB%D0%B8%D1%86%D0%B8%D0%B8_%D0%BD%D0%B8%D0%B3%D0%B5%D1%80%D0%B8%D0%B9%D1%81%D0%BA%D0%BE%D0%B3%D0%BE_%D0%B3%D0%BE%D1%80%D0%BE%D0%B4%D0%B0_%D0%9B%D0%B0%D0%B3%D0%BE%D1%81__2019-04-17_17-45-10__90fd51d58b.mp4'

Steps to reproduce the problem

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