Sclack won't work at bootstrap

Hello, I'm trying to run Sclack on a Python 3.x env and it just breaks on app init

Software setup:
Python
```
▶ python3 -V
Python 3.8.5
```
Pip
```
▶ pip3 -V
pip 20.1.1 from /usr/lib/python3.8/site-packages/pip (python 3.8)
```
OS
```
▶ uname -a
Linux 5.7.15-1-MANJARO #1 SMP PREEMPT Tue Aug 11 15:00:37 UTC 2020 x86_64 GNU/Linux
```
Some stack tracing:
```Traceback (most recent call last):
File "./app.py", line 967, in
app.start()
File "./app.py", line 103, in start
self.urwid_loop.run()
File "/home/arjuna/.local/lib/python3.8/site-packages/urwid/main_loop.py", line 286, in run
self._run()
File "/home/arjuna/.local/lib/python3.8/site-packages/urwid/main_loop.py", line 384, in _run
self.event_loop.run()
File "./app.py", line 38, in run
self._loop.run_forever()
File "/usr/lib/python3.8/asyncio/base_events.py", line 570, in run_forever
self._run_once()
File "/usr/lib/python3.8/asyncio/base_events.py", line 1823, in _run_once
event_list = self._selector.select(timeout)
File "/usr/lib/python3.8/selectors.py", line 468, in select
fd_event_list = self._selector.poll(timeout, max_ev)
KeyboardInterrupt
```

I've already tried using `sudo`, but it doesn't work as well. Do you need something else?