AttributeError: '_UnixSelectorEventLoop' object has no attribute '_ssock'

[Ali-Razmjoo]

➜ Nettacker git:(issue/609) ✗ python3 nettacker.py -i google.com --profile http -t 1100 -M 5

AttributeError: '_UnixSelectorEventLoop' object has no attribute '_ssock'
    self._remove_reader(self._ssock.fileno())
  File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.9/lib/python3.9/asyncio/selector_events.py", line 92, in close
    self._remove_reader(self._ssock.fileno())
AttributeError: '_UnixSelectorEventLoop' object has no attribute '_ssock'
  File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.9/lib/python3.9/asyncio/selector_events.py", line 99, in _close_self_pipe
    self._remove_reader(self._ssock.fileno())
AttributeError: '_UnixSelectorEventLoop' object has no attribute '_ssock'
  File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.9/lib/python3.9/asyncio/selector_events.py", line 99, in _close_self_pipe
    self._remove_reader(self._ssock.fileno())
    self._remove_reader(self._ssock.fileno())
AttributeError: '_UnixSelectorEventLoop' object has no attribute '_ssock'
  File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.9/lib/python3.9/asyncio/selector_events.py", line 99, in _close_self_pipe
    self._close_self_pipe()
  File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.9/lib/python3.9/asyncio/selector_events.py", line 99, in _close_self_pipe
AttributeError: '_UnixSelectorEventLoop' object has no attribute '_ssock'
AttributeError: '_UnixSelectorEventLoop' object has no attribute '_ssock'
  File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.9/lib/python3.9/asyncio/selector_events.py", line 99, in _close_self_pipe
    self._remove_reader(self._ssock.fileno())
  File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.9/lib/python3.9/asyncio/selector_events.py", line 99, in _close_self_pipe

[Mrinank-Bhowmick]

I think there is a problem in event loop used, so we can update the code by adding asyncio.set_event_loop_policy(asyncio.DefaultEventLoopPolicy())