Incorrect path variable encoding in Windows 10

launching command 'path' from integrated PyCharm 2018.1 terminal shows:

PATH=...;C:\Users
\�лья\AppData\Local\Microsoft\WindowsApps;C:\Users\�лья\AppData\Roaming\npm;C:\Program Files\Microsoft VS Code\bin;C:\Users\�лья\AppData\Local\Microsoft\WindowsApps;

But on same machine in same Windows with Webstorm 2018.1:

PATH=...;C:\Users\Илья\AppData\Local\Microsoft\WindowsApps;C:\Users\Илья\AppData\Roaming\npm;C:\Program Files\Microsoft VS Code\bin;C:\Users\Илья\AppData\Local\Microsoft\WindowsApps;

This problem doesn't allow launch Django server:

UnicodeEncodeError: 'mbcs' codec can't encode characters in position 0--1: invalid character

updating Pycharm was through Jetbrains Toolbox. After rolling back to PyCharm 2017.3.4 problem is solving

With Pycharm 2017.* there were no such problem. used Python 3.5