flat-manager is broken: ModuleNotFoundError: No module named 'multidict'
$ flat-manager/flat-manager-client create $FLAT_MANAGER_SERVER $FLAT_MANAGER_REPO > build.txt
Traceback (most recent call last):
File "flat-manager/flat-manager-client", line 17, in <module>
import aiohttp
File "/usr/lib/python3.7/site-packages/aiohttp/__init__.py", line 5, in <module>
from . import hdrs
File "/usr/lib/python3.7/site-packages/aiohttp/hdrs.py", line 6, in <module>
from multidict import istr
ModuleNotFoundError: No module named 'multidict'