failed to install miniupnpc==1.9

[hjtao]

Brief Description:
install miniupnpc==1.9 failed.
The error (Command "python setup.py egg_info" failed with error code 1 in c:\users\hjt\appdata\local\temp\pip-build-qktcpp\miniupnpc) occured when I tried to execute the command “pip install miniupnpc==1.9”.
And then I built and installed the miniupnpc1.9 using mingw. When I executed the command "python openbazaard.py start --help", it occured that "ImportError: No module named stun" in file "openbazaard.py", at line 8.
Is that because I installed miniupnpc failed?
Thanks in advance.
Operating System (OS and version): win10
OpenBazaar version:
Reproducible (Always / Almost Always / Sometimes / Rarely / Couldn't Reproduce):
Always

Additional info (links, images, etc go here):