Webrtc-error

AttributeError: 'NoneType' object has no attribute 'call_exception_handler'
Exception in callback Transaction.__retry()
handle: <TimerHandle when=18240.204083038 Transaction.__retry()>
Traceback (most recent call last):
  File "/usr/local/lib/python3.12/asyncio/selector_events.py", line 1275, in sendto
    self._sock.sendto(data, addr)
    ^^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'sendto'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.12/asyncio/events.py", line 88, in _run
    self._context.run(self._callback, *self._args)
  File "/home/adminuser/venv/lib/python3.12/site-packages/aioice/stun.py", line 312, in __retry
    self.__protocol.send_stun(self.__request, self.__addr)
  File "/home/adminuser/venv/lib/python3.12/site-packages/aioice/ice.py", line 266, in send_stun
    self.transport.sendto(bytes(message), addr)
  File "/usr/local/lib/python3.12/asyncio/selector_events.py", line 1285, in sendto
    self._fatal_error(
  File "/usr/local/lib/python3.12/asyncio/selector_events.py", line 888, in _fatal_error
    self._loop.call_exception_handler({
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'call_exception_handler'