I have the same problem … since update to 2022.4 I cannot access HA via duckdns anymore.
It is totally accessible locally but via duckdns I get This site can’t be reached.
I haven’t changed anything and duckdns has proper IP assigned. Tried rebooting but problem is still there.
This is from my homeassistant.log
ERROR (MainThread) [aiohttp.server] Unhandled exception
Traceback (most recent call last):
File “/usr/local/lib/python3.9/asyncio/base_events.py”, line 1183, in _sendfile_fallback
read = await self.run_in_executor(None, file.readinto, view)
asyncio.exceptions.CancelledError
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File “/usr/local/lib/python3.9/site-packages/aiohttp/web_protocol.py”, line 514, in start
resp, reset = await task
File “/usr/local/lib/python3.9/site-packages/aiohttp/web_protocol.py”, line 460, in _handle_request
reset = await self.finish_response(request, resp, start_time)
File “/usr/local/lib/python3.9/site-packages/aiohttp/web_protocol.py”, line 613, in finish_response
await prepare_meth(request)
File “/usr/local/lib/python3.9/site-packages/aiohttp/web_fileresponse.py”, line 286, in prepare
return await self._sendfile(request, fobj, offset, count)
File “/usr/local/lib/python3.9/site-packages/aiohttp/web_fileresponse.py”, line 99, in _sendfile
await loop.sendfile(transport, fobj, offset, count)
File “/usr/local/lib/python3.9/asyncio/base_events.py”, line 1162, in sendfile
return await self._sendfile_fallback(transport, file,
File “/usr/local/lib/python3.9/asyncio/base_events.py”, line 1192, in _sendfile_fallback
await proto.restore()
File “/usr/local/lib/python3.9/asyncio/base_events.py”, line 263, in restore
self._transport.resume_reading()
File “/usr/local/lib/python3.9/asyncio/sslproto.py”, line 343, in resume_reading
self._ssl_protocol._transport.resume_reading()
AttributeError: ‘NoneType’ object has no attribute ‘resume_reading’