Traceback (most recent call last):
File "C:\Python37x86\lib\site-packages\httpx_ws\_api.py", line 978, in _background_keepalive_ping
pong_callback = await self.ping()
File "C:\Python37x86\lib\site-packages\httpx_ws\_api.py", line 625, in ping
await self.send(event)
File "C:\Python37x86\lib\site-packages\httpx_ws\_api.py", line 660, in send
raise WebSocketNetworkError() from e
httpx_ws._api.WebSocketNetworkError